Complete the sentences by choosing the most appropriate option, from the given lettered choices (A to D/E) below:
He would like ______ have a job in the same office as his brother.

NTS 2018
English
Tenses and Sentence Structure
Elimination Tool:

A) too
B) to
C) of to
D) get

Complete the sentences by choosing the most appropriate option, from the given lettered choices (A to D/E) below:
The road is wet. It must ______ raining.

NTS 2018
English
Tenses and Sentence Structure
Elimination Tool:

A) have been
B) had
C) has
D) have

Identify the word or phrase that needs to be changed for the sentence to be correct.
The guests broke a dozen glass at the party.

NTS 2018
English
Identify errors in sentence
Elimination Tool:

A) The guests
B) broke
C) glass
D) at
E) No Error

Choose the word most similar in meaning to the capitalized one.
FORBID:

NTS 2018
English
Key Vocabulary
Elimination Tool:

A) prohibit
B) chide
C) permit
D) constraint

Choose the word most similar in meaning to the capitalized one.
SHABBY:

NTS 2018
English
Key Vocabulary
Elimination Tool:

A) organized
B) untidy
C) reluctant
D) sensible

Choose the lettered word or phrase that is most nearly opposite in meaning to the word in capital letters:
SUPREMACY

NTS 2018
English
Key Vocabulary
Elimination Tool:

A) excellency
B) sovereignty
C) inferiority
D) influence

Identify the word or phrase that needs to be changed for the sentence to be correct.
It’s too late to go for a walk now; besides, it’s beginning to rain.

NTS 2018
English
Identify errors in sentence
Elimination Tool:

A) It’s
B) go
C) besides
D) beginning
E) No Error

Television is typical of many new scientific words which are deliberately invented from old Greek and Latin words. In this case, the prefix ‘tele’ is Greek and means ‘far’ (of telephone, telegram), while the root ‘vision’ is derived from the Latin verb meaning ‘to see’.
The word “Television” is invented from:

NTS 2018
English
Key Vocabulary
Elimination Tool:

A) English and Spanish
B) French and Arabic
C) Dutch and German
D) Greek and Latin

Television is typical of many new scientific words which are deliberately invented from old Greek and Latin words. In this case, the prefix ‘tele’ is Greek and means ‘far’ (of telephone, telegram), while the root ‘vision’ is derived from the Latin verb meaning ‘to see’.
Which of the following gives the meaning of the prefix “tele”?

NTS 2018
English
Key Vocabulary
Elimination Tool:

A) Near
B) Close
C) Far
D) Away

In which of the following growth phases, the number of bacteria increases the most rapidly?

NTS 2018
Biology
Kingdom Prokaryote
Growth and Reproduction in Bacteria
Elimination Tool:

A) Lag phase
B) Log phase
C) Stationary phase
D) Death / Decline phase

Which of the following is the simplest form of pathogens causing diseases?

NTS 2018
Biology
Bio-diversity | Variety of Life
Elimination Tool:

A) Viruses
B) Prions
C) Fungus
D) Amoeba

Choose the lettered word or phrase that is most nearly opposite in meaning to the word in capital letters:
PATRIOTISM

NTS 2018
English
Key Vocabulary
Elimination Tool:

A) nationalism
B) socialism
C) obsession
D) disloyalty

In the electromagnetic spectrum of radiation, the wavelength spectrum that is visible to humans lies in the range of:

NTS 2018
Physics
Nature of Light
Elimination Tool:

A) 100-400 nm
B) 400-700 nm
C) 700-1000 nm
D) 1000-1500 nm

The efficiency of the Carnot engine working between temperatures 177°C and 77°C will be:

NTS 2018
Physics
Heat and Thermodynamics
Thermodynamic Scale of Temperature
Elimination Tool:

A) 22.22%
B) 23.23%
C) 25.25%
D) 30.30%

Bimetallic thermostat is an example of:

NTS 2018
Physics
Kinetic Theory of Gases
Heat and Thermodynamics
Elimination Tool:

A) Electric field
B) Thermal expansion
C) Heat engine
D) Isobaric process

The process in which light bends around an obstacle is called:

NTS 2018
Physics
Nature of Light
Elimination Tool:

A) Diffraction of Light
B) An interference of light
C) Reflection of light
D) Polarization of light

Two forces equal in magnitude but opposite In direction and not acting along the same line constitute a couple. The movement of this couple will be:

NTS 2018
Physics
Forces and Motion
Newton’s Laws of Motion
Elimination Tool:

A) Dependent on the location of the origin
B) Independent of the location of the origin
C) Zero
D) Scalar product

Equations of kinetics are valid only when the acceleration is:

NTS 2018
Physics
Forces and Motion
Equations of Uniformly Accelerated Motion
Elimination Tool:

A) Increasing
B) Decreasing
C) Constant
D) Vary with time

There are different types of waves that exist in this universe. Which of the following waves do NOT need any material medium to travel?

NTS 2018
Physics
Wave Motion and Sounds
Elimination Tool:

A) Sound waves
B) Waves produced on a string
C) Electromagnetic waves
D) Waves produced on the water surface

A conductor of length L is moved across a magnetic field. Due to this activity, a potential difference appears across the ends of the conductor. This type of potential difference is termed as:

NTS 2018
Physics
Magnetism and Electromagnetic Induction
Motion of a Charged Particle in an Electric and Magnetic Field
Elimination Tool:

A) Self Induction
B) Mutual Induction
C) Motional EMF
D) Electrostatic potential

Let X be a radioactive element having No nuclei. The time required to decay this element to one half of its initial number No is known as:

NTS 2018
Physics
Nuclear Physics
Radioactivity
Elimination Tool:

A) Law of radioactive decay
B) Decay constant
C) Half life
D) Decay time

In the photoelectric effect, a photon of energy hv is incident on the metal surface. The energy required to eject the valence electron from the surface of the metal is expressed as:

NTS 2018
Physics
Nature of Light
Elimination Tool:

A) Wave nature of the light
B) Compton scattering
C) Melting point of the metal
D) Work function of the metal

The atomic number Z of an atom represents the:

NTS 2018
Physics
Atomic Structure
Sub Atomic Particles and Their Discoveries
Elimination Tool:

A) Number of protons
B) Number of electrons and protons
C) Number of neutrons
D) Sum of protons and neutrons

When an electron and its antiparticle positron come close enough to each other, they completely convert into radiation energy in the form of photons, this process is called:

NTS 2018
Physics
Dawn of Modern Physics
Elimination Tool:

A) Photoelectric current
B) Pair production
C) Annihilation of matter
D) Compton effect

If constant temperature conditions are applied to a gas container, then the volume of the mass of that gas tends to increase by:

NTS 2018
Physics
Heat and Thermodynamics
Kinetic Theory of Gases
Elimination Tool:

A) Decreasing the applied pressure
B) Increasing the applied pressure
C) Increasing the applied pressure with double force
D) Increasing the weight

The process of natural decay of some heavy nuclides is because of the phenomenon:

NTS 2018
Physics
Nuclear Physics
Radioactivity
Elimination Tool:

A) Emission Spectra
B) Nuclear fusion
C) Nuclear fission
D) Radioactivity

If sunlight is incident on the photocell, the number of electrons emitted from the surface of the cell increases with the:

NTS 2018
Physics
Nature of Light
Elimination Tool:

A) Increase of light frequency
B) Increase of light intensity
C) Decrease of light frequency
D) Decrease of light intensity

Which of the following phenomenon represents the wave nature of light?

NTS 2018
Physics
Nature of Light
Elimination Tool:

A) Photoelectric effect
B) Compton scattering
C) Interference of light
D) Pair production

In free states, the mass of the nucleus is always:

NTS 2018
Physics
Nuclear Physics
Mass Defect And Binding Energy
Elimination Tool:

A) Greater than the mass of its constituents
B) Equal to the mass of its constituents
C) Less than the mass of its constituents
D) Far greater than the mass of its constituents

If a constant current is flowing through a coil, then the flux through that coil will become constant. In such types of arrangements, the electromotive force (emf) induced in the coil will be:

NTS 2018
Physics
Magnetism and Electromagnetic Induction
Faradays and Lenz Law and Induced EMF
Elimination Tool:

A) Self-Inductance
B) Zero
C) Mutual-Inductance
D) Back EMF

The process of adding controlled impurities to a semiconductor is known as _______. The amount of impurity added to an intrinsic (pure) semiconductor varies its level of conductivity.

NTS 2018
Physics
Physics of Solids
Elimination Tool:

A) Crystallography
B) Rectification
C) Intrinsic defects
D) Doping

If we increase the cross-section area of a conductor having a length L, the resistance R of that conductor will be:

NTS 2018
Physics
Current Electricity
Ohms Law
Elimination Tool:

A) Zero
B) Constant
C) Increasing
D) Decreasing

If a car collides with a housefly, what will be the magnitude of the force experienced by the housefly?

NTS 2018
Physics
Forces and Motion
Newton’s Laws of Motion
Elimination Tool:

A) Much greater than the force experienced by the car
B) Much lesser than than the force experienced by the car
C) Same as the force experienced by the car
D) 10 times less than the force experienced by the car

If in a circuit, 2 Ampere current is drawn from the battery in 10 minutes. How much charge will flow through the circuit in this time?

NTS 2018
Physics
Current Electricity
Electric Current
Elimination Tool:

A) 1200 Coulombs
B) 600 Coulombs
C) 500 Coulombs
D) 20 Coulombs

In simple harmonic motion, a particle is oscillating in such a way that its total energy remains conserved. When this particle reaches its two extreme positions, its potential energy at the extreme positions become:

NTS 2018
Physics
Oscillations amd Simple Harmonic Motion
Elimination Tool:

A) Minimum
B) Maximum
C) Zero
D) Greater than its kinetic energy

Which process is shown in the graph between pressure and volume given below?

NTS 2018
Physics
Heat and Thermodynamics
First Law of Thermodynamics
Elimination Tool:

A) Adiabatic
B) Isobaric
C) Isochoric
D) Isothermal

Law of heat exchange is used to determine:

NTS 2018
Physics
Heat and Thermodynamics
Kinetic Theory of Gases
Elimination Tool:

A) Coefficient of linear expansion
B) Coefficient of volume expansion
C) Ideal gas constant
D) Specific heat of a substance

In electronic circuits, a PN junction diode is used to convert alternating current into direct current. This process is called:

NTS 2018
Physics
Alternating Current
A.C. Circuits
Elimination Tool:

A) Rectification
B) Amplification
C) Doping
D) Integrated Circuit

A cyclist is moving towards the right with an acceleration of 4m/sec2. At t=0, he has traveled 5m moving towards the right at 15 m/sec. What will be his position at t = 2 seconds?

NTS 2018
Physics
Forces and Motion
Equations of Uniformly Accelerated Motion
Elimination Tool:

A) 36
B) 38
C) 41
D) 43

If a dielectric material is placed between two plates of a capacitor, the net capacitance of the capacitor:

NTS 2018
Physics
Electrostatics
Elimination Tool:

A) Decreases
B) Increases
C) Remains constant
D) Zero

A solar day is the time interval between two successive appearances of the sun overhead. The time that is referred to the rotation of the earth about its axis is called:

NTS 2018
Physics
Gravitation
Geostationary Orbits
Elimination Tool:

A) Universal Time
B) Length of the day
C) Time interval
D) Solar day

During radioactive decay of a nucleus zXA, β emission takes place along with the daughter nucleus. Because of this beta particle emission, the mass number (A) of the parent nucleus:

NTS 2018
Physics
Nuclear Physics
Radioactivity
Elimination Tool:

A) Remains constant
B) Decreases by 1
C) Increases by 1
D) Decreases by 2

Which of the following basic structural level of proteins is indicated by an association of two alpha and two beta chains in the haemoglobin molecule?

NTS 2018
Biology
Biological Molecules
Proteins
Elimination Tool:

A) Primary structure
B) Secondary structure
C) Tertiary structure
D) Quatenary Structure

Which of the following is NOT a viral disease?

NTS 2018
Biology
Bio-diversity | Variety of Life
Elimination Tool:

A) AIDS
B) Malaria
C) Influenza
D) Chickenpox
E) Rabies

Which of the following endoparasites of humans does show viviparity?

NTS 2018
Biology
Kingdom Fungi
Reprodution in Fungi
Elimination Tool:

A) Trichinella spiralis
B) Ascaris lumbricoides
C) Ancylostoma duodenale
D) Enterobius vermicularis

Carbon dioxide joins the photosynthetic pathway at:

NTS 2018
Biology
Bioenergetics
Light Independent Mechanism of Photosynthesis
Elimination Tool:

A) PSI
B) PSII
C) Light reaction
D) Dark reaction

In recombinant DNA technology, the copies of recombinant DNA are increased by:

NTS 2018
Biology
Biotechnology
Genetic Engineering & its tools
Elimination Tool:

A) Restriction enzyme
B) Ligase
C) Selection of host with rDNA
D) Multiplication of host with rDNA

The branch of science dealing with the classification of life forms is called:

NTS 2018
Biology
Biology and its Major Fields of Specialization
Introduction to Biology and Some Major Fields of Specialization
Elimination Tool:

A) Genetics
B) Taxonomy
C) Archeology
D) Paleontology
E) Biochemistry

The process by which one molecule of Glucose splits up into molecules of Pyruvate is called:

NTS 2018
Biology
Bioenergetics
Respiration Mechanism – Glycolysis to Electron Transport Chain
Elimination Tool:

A) Glycolysis
B) Oxidative Phospholyration
C) Electron Transport Chain
D) Kreb’s Cycle
E) Calvin Cycle

Which of the following phyla of Kingdom Animalia do humans belong to?

NTS 2018
Biology
Kingdom Animalia
Phylums – porifera to chordata
Elimination Tool:

A) Mollusca
B) Arthropoda
C) Echinodermata
D) Chordata

The disease caused by Protozoal infection is:

NTS 2018
Biology
Kingdom Protista
Importance of Protists
Diversity and major groups of protista
Elimination Tool:

A) Rickets
B) Goiter
C) Malaria
D) Beri-beri
E) Alzheimer’s

Which of the following is the manipulation of genetic material for practical purposes?

NTS 2018
Biology
Biotechnology
Genetic Engineering & its tools
Elimination Tool:

A) Grafting
B) Tissue Culture
C) Genetic Engineering
D) Cell Culture

Which of the following bacteria are able to release oxygen into the environment?

NTS 2018
Biology
Kingdom Prokaryote
Motility and Nutrition in Bacteria
Elimination Tool:

A) Saprotrophic bacteria
B) Parasitic bacteria
C) Cyanobacteria
D) Pathogenic bacteria

Which one of the following organelles is required for aerobic respiration?

NTS 2018
Biology
Cell Structure and Function
Cytoplasm and Organelles
Elimination Tool:

A) Nucleus
B) Mitochondrion
C) Endoplasmic reticulum
D) Plastids
E) Cytoskeletons

Which of the following is divided by fission?

NTS 2018
Biology
Kingdom Protista
Introduction and history of Protists
Elimination Tool:

A) Viruses
B) Viroids
C) Bacteria
D) Fungus

The enzyme found in saliva responsible for the digestion of carbohydrates is:

NTS 2018
Biology
Enzymes
Elimination Tool:

A) Lysozyme
B) Amylase
C) Pepsin
D) Trypsinogen
E) Lipase

The disease that arises due to increasing age is:

NTS 2018
Biology
Growth and Development
Aging & Regeneration
Elimination Tool:

A) Alzheimer’s
B) Hepatitis C
C) Cholera
D) Malaria
E) Beriberi

Which of the following is NOT the part of RNA?

NTS 2018
Biology
Chromosomes and DNA
DNA Replication
Elimination Tool:

A) Nitrogenous bases
B) Ribose Sugars
C) Deoxyribose Sugars
D) Phosphate groups

Mark the one Kingdom having the most conspicuous living organisms?

NTS 2018
Biology
Bio-diversity | Variety of Life
Elimination Tool:

A) Monera
B) Protista
C) Animalia
D) Plantae

The technique use of identification of criminals is called:

NTS 2018
Biology
Biotechnology
Scope and importance of Biotechnology
Elimination Tool:

A) Cloning
B) DNA fingerprinting
C) Restriction Analysis
D) Polymorphism

Which of the following conditions is due to a nutritional deficiency?

NTS 2018
Biology
Nutrition
Elimination Tool:

A) Hepatitis
B) Cholera
C) Malaria
D) Beriberi
E) Alzheimer’s Disease

The chromosomes with equal arms are called:

NTS 2018
Biology
Chromosomes and DNA
Types & Composition of Chromosomes
Elimination Tool:

A) Metacentric
B) Submetacentric
C) Acrocentric
D) Telocentric

Which of the following is NOT a part of the immune system?

NTS 2018
Biology
Transport
Elimination Tool:

A) Phagocytes
B) Complement Proteins
C) Cytokines
D) Atherosclerosis

Which of the following is NOT the function of cell membranes?

NTS 2018
Biology
Cell Structure and Function
Plasma Membrane
Elimination Tool:

A) Protection of cytoplasm
B) Regulating the passage of different molecules
C) Protein synthesis
D) Cellular communication
E) Cellular transportation

The system responsible for fighting the pathogens is:

NTS 2018
Biology
Gaseous Exchange
Elimination Tool:

A) Muscular System
B) Endocrine System
C) Nervous System
D) Immune System

The category of organisms which are able to make their own food is called:

NTS 2018
Biology
Ecosystem
Elimination Tool:

A) Heterotrophs
B) Autotrophs
C) Consumers
D) Decomposers
E) Saprotrophs

Which part of the cell does glycolysis occur in?

NTS 2018
Biology
Bioenergetics
Respiration Mechanism – Glycolysis to Electron Transport Chain
Elimination Tool:

A) Mitochondrion
B) Chloroplast
C) Cytoplasm
D) Nucleus
E) Vacuole

The branch of science dealing with the fossil record is called:

NTS 2018
Biology
Biology and its Major Fields of Specialization
Introduction to Biology and Some Major Fields of Specialization
Elimination Tool:

A) Genetics
B) Taxonomy
C) Archeology
D) Palentology
E) Biochemistry

Genetic information in the DNA is encoded as:

NTS 2018
Biology
Chromosomes and DNA
DNA Replication
Elimination Tool:

A) Deoxyribose sugar
B) Ribose sugar
C) Phosphate group
D) Sequence of nitrogenous bases
E) Sequence of phosphate group

Referring to sexual reproduction, humans are:

NTS 2018
Biology
Reproduction
Reproduction in Animals
Elimination Tool:

A) Hermaphrodites
B) Vivaparous
C) Oviparous
D) Self-fertilized

The question attached below belongs to the topic of phenols:

NTS 2018
Chemistry
Alcohol, Phenols, and Ethers
Elimination Tool:

A) Resorcinol
B) Aspirin
C) Picric acid
D) Mesitol

Methyl orange is _______ in acidic solutions.

NTS 2018
Chemistry
Acids, Bases and Salts
Acidic, Basic and Amphoteric Substances
Elimination Tool:

A) Yellow
B) Pink
C) Orange
D) Red

For the following exothermic reaction, a decrease in temperature will shift the equilibrium towards: 2NO(g) + O2 (g) -> 2NO2 (g)

NTS 2018
Chemistry
Chemical Equilibrium
State of Chemical Equilibrium
Elimination Tool:

A) Left
B) The Point of Equilibrium
C) Both Directions
D) Right

Which one of the following is the pure carbon compound and used as a reducing agent in industries?

NTS 2018
Chemistry
Macromolecules
Introduction and Structure of Polymers
Elimination Tool:

A) Coal tar
B) Petroleum
C) Coal gas
D) Coke

In which of the following nitrogen compounds, does N has the highest oxidation state?

NTS 2018
Chemistry
Electrochemistry
Oxidation Number or State
Elimination Tool:

A) NH2OH
B) N2H4
C) HNO3
D) NH3

The phenomenon in which certain elements emit invisible radiations is called:

NTS 2018
Chemistry
Nuclear Physics
Elimination Tool:

A) Spectroscopy
B) Radioactivity
C) Gravimetery
D) Chromatography

Real gases behave ideally at:

NTS 2018
Chemistry
States of Matter – Gases, Liquids and Solids
Real and Ideal Gas Equation
Elimination Tool:

A) Low temperature and low pressure
B) Moderate temperature and low pressure
C) High temperature and low pressure
D) High temperature and high pressure

The number of bond(s) between carbon and nitrogen atoms in a Nitrile is:

NTS 2018
Chemistry
Chemical Bonding
Intermolecular Forces
Elimination Tool:

A) One sigma and one pi
B) Two sigma and one pi
C) Only sigma
D) One sigma and two pi

The reaction 2CO + O2 -> 2CO2 proceeds slower because activation energy is:

NTS 2018
Chemistry
Thermochemistry
Standard States and Enthalpy Changes
Elimination Tool:

A) Equilibrium
B) Constant
C) Low
D) High

How many chain isomers are shown by C5H12?

NTS 2018
Chemistry
Hydrocarbons
Introduction to Hydrocarbons
Elimination Tool:

A) 5
B) 4
C) 3
D) 2

For the first time in 1914, Henry Moseley used X-rays for the determination of:

NTS 2018
Chemistry
Atomic Spectra
Inner Shell Transitions And Characteristic X-rays
Elimination Tool:

A) Atomic Number
B) Atomic Mass
C) Molecular Mass
D) Equiavalent mass

When electricity is passed through water in the presence of an acid, oxygen and ______ is produced.

NTS 2018
Chemistry
Electrochemistry
Electrochemical Series
Elimination Tool:

A) Carbon
B) CO
C) CO2
D) Hydrogen

106 gram of Na2CO3 per dm3 of the solution of Na2CO3 in water, the concentration of the solution will be:

NTS 2018
Chemistry
Stoichiometry
Limiting and Non Limiting Reagents
Elimination Tool:

A) 1N
B) 0.1 M
C) 1M
D) 0.02M

Which alkyl halide has the lowest reactivity for a particular alkyl group?

NTS 2018
Chemistry
Alkyl Halides and Amines
Reactivity and Reactions of Alkyl Halides
Elimination Tool:

A) R-CI
B) R-F
C) R-Br
D) R-I

The normal pH of blood is:

NTS 2018
Chemistry
Chemistry of Life
Minerals of Biological Signifance
Elimination Tool:

A) 7.05
B) 7.75
C) 7.35
D) 7.25

Which one of the following vitamins Is required for normal growth, vision, and keeping the skin healthy?

NTS 2018
Chemistry
Chemistry of Life
Minerals of Biological Signifance
Elimination Tool:

A) Vitamin D
B) Vitamin E
C) Vitamin A
D) Vitamin K

Which one of the following is NOT a meta directing group?

NTS 2018
Chemistry
Alcohol, Phenols, and Ethers
Elimination Tool:

A) COOH
B) SO3H
C) CHO
D) OH

Which of the following properties depends upon the amount of matter present in the system?

NTS 2018
Chemistry
Elimination Tool:

A) Density
B) Gibb’s free energy
C) Pressure
D) Temperature

The alloy Duralumin is composed of ______ of Al.

NTS 2018
Chemistry
Macromolecules
Introduction and Structure of Polymers
Elimination Tool:

A) 95%
B) 90%
C) 85%
D) 80%

The rate of a chemical reaction is directly proportional to the product of active masses of the reactants, it is referred to as:

NTS 2018
Chemistry
Reaction Kinetics
Rate and velocity of chemical reaction
Elimination Tool:

A) Law of conservation of energy
B) Law of mass action
C) Law of conservation of mass
D) Active mass law

The Neutron was discovered by:

NTS 2018
Chemistry
Atomic Structure
Sub Atomic Particles and Their Discoveries
Elimination Tool:

A) Goldstein
B) Rutherford
C) J.J Thomson
D) Chadwick

Which one of the following does NOT give an iodoform test?

NTS 2018
Chemistry
Alcohol, Phenols, and Ethers
Elimination Tool:

A) CH3OH
B) CHCH2OH
C) CH3CHO
D) CHCOCH3

How many significant figures are there in 0.4793?

NTS 2018
Measurements
Physics
Significant Figures
Elimination Tool:

A) 3
B) 4
C) 5
D) 6

The melting point of NaCl is very high, 801°C. It is reduced to 600°C by the addition of _______ in Down’s process.

NTS 2018
Chemistry
Macromolecules
Introduction and Structure of Polymers
Elimination Tool:

A) Calcium chloride
B) Magnesium chloride
C) Aluminium chloride
D) Potassium chloride

The transparent plastic used to make combs and hairbrushes is called:

NTS 2018
Chemistry
Macromolecules
Types of Polymers
Elimination Tool:

A) PVA
B) PVC
C) Bakelite
D) Perspex

Lithium and beryllium are unique in such a way that they have higher charge densities which produce strong polarizing effects due to:

NTS 2018
Chemistry
Chemical Bonding
Energetics of Bond Formation
Elimination Tool:

A) Non-metal
B) Solubility
C) Small Size
D) Large size

In electrochemical series, elements are arranged in order of their standard electrode potentials, the correct decreasing reactivity order for metals is:

NTS 2018
Chemistry
Electrochemistry
Electrochemical Series
Elimination Tool:

A) Gold, silver, magnesium, aluminum
B) Mercury, calcium, sodium, magnesium
C) Sodium, aluminum, lead, copper
D) Potassium, silver, magnesium, aluminum

Zwitter ion is formed when proton goes from:

NTS 2018
Chemistry
Alkyl Halides and Amines
Reactivity and Reactions of Alkyl Halides
Elimination Tool:

A) Amino to the carboxyl group
B) Carboxyl to an amino group
C) Carboxyl group only
D) Amino group only

The boiling point of water is higher than other hydrides because water molecules can form:

NTS 2018
Chemistry
Chemical Bonding
Hydrogen Bonding
Elimination Tool:

A) 4 hydrogen bonds
B) 3 hydrogen bonds
C) 2 hydrogen bonds
D) 1 hydrogen bonds

Which of the following reactions is NOT shown by ketones?

NTS 2018
Chemistry
Aldehydes and Ketones
Reactivity and Reactions of Carbonyl Group
Elimination Tool:

A) Reaction with HCN
B) Reaction with Fehling solution
C) Reaction with NaHSO3
D) Reaction with 2,4-dinitrophenyl-hydrazine