Chemistry Practice Tests 5 - PLS Academy

Chemistry Practice Test 5

Chemistry Practice Test 5 is designed to help students strengthen their understanding of key chemistry concepts, formulas, and reactions for competitive entry tests like MDCAT, NUMS, AKU, UET, ECAT, NTS, as well as FSC Board Exams. This test covers topics from thermodynamics, chemical equilibrium, coordination compounds, and practical applications, helping students improve accuracy and problem-solving skills.

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Chemistry Practice Test 5

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1 / 100

Category: Chemistry Ch 1 Class 11

If you need to produce carbon dioxide from 12 grams of carbon, how many grams would you need?

2 / 100

Category: Chemistry Ch 4 Class 12

F-block elements are called?

PMC Practice 1
Chemistry
d and f Block Elements
Elimination Tool:

A) Inner transition

B) Outer transition

C) Both

D) None

3 / 100

Category: Chemistry

Q.93 Which element has electronic configuration of [Ar]4s1, 3d5

A. Cu

B. Zn

C. Cr

D. V

4 / 100

Category: Chemistry Ch 7 Class 11

The net heat change in a chemical reaction is the same whether it is brought about in two or more different ways in one or several steps. This is known as:

NTS 2019
Chemistry
Thermochemistry
Elimination Tool:

A) Henry's law

B) Hess's law.

C) Joule's principle

D) Dalton's law

5 / 100

Category: Chemistry

Q.17 Legumine & collagen protein are present in which type of body tissues:

A. Cardiac

B. Epithelial

C. Connective

D. Epidermis

6 / 100

Category: Chemistry Ch 15 Class 12

In the atmosphere, CO2is about?

NUMS 2018
Chemistry
Environmental Chemistry
Elimination Tool:

A) 0.01 %

B) 0.03 %

C) 0.05 %

D) 0.09 %

7 / 100

Category: Chemistry Ch 11 Class 11

Activated complex is formed due to

PMC Sample 3
Chemistry
Reaction Kinetics
Elimination Tool:

A) Pressure

B) Temperature

C) Effective collision

D) Ineffective collision

8 / 100

Category: Chemistry Ch 2 Class 12

The nitrides of alkaline earth metals hydrolyse with water to form:

NUMS 2020
Chemistry
s and p Block Elements
Elimination Tool:

A) NH3

B) H2

C) N2

D) NO

9 / 100

Category: Chemistry

Q.34 Which of these have a positive value of enthalpy?

A. Combustion

B. Neutralization

C. Atomization

D. All of these

10 / 100

Category: Chemistry Ch 8 Class 11

1.8 x 10 -5 is the dissociation constant of:

NTS 2016 SMBBMC
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Formic acid

B) Acetic acid

C) Chloroacetic acid

D) Hydrocyanic acid

11 / 100

Category: Chemistry Ch 3 Class 11

The internal energy of an ideal gas depends upon its:

NTS 2016 DUHS & JSMU
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Molecular size

B) Pressure only.

C) Volume only

D) Temperature only

12 / 100

Category: Chemistry Ch 15 Class 12

1 calorie = ______ Joules.

NTS 2012
Chemistry
Chemistry of Life
Elimination Tool:

A) 200 Joules

B) 2000 Joules

C) 4.184 Joules

D) 4180 Joules

13 / 100

Category: Chemistry Ch 11 Class 11

The unit of the rate constant is the same as that of the rate of reaction in:

PMC 2020
Chemistry
Reaction Kinetics
Elimination Tool:

A) Zero order reaction

B) First order reaction

C) Second order reaction

D) Third order reaction

14 / 100

Category: Chemistry Ch 9 Class 11

Which one is the correct formula for molar mass of solute In case of boiling point elevation? x

M2= 1000 Kb W2M1/ Tb W1

) M2= 1000 Kb W2/ Tb

M2 = Kb W1 Tb/1000

M2 =1000 Tb W21 Kb

15 / 100

Category: Chemistry Ch 6 Class 11

Triatomic molecules have following movements:

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

A) Translation and vibrational

B) Rotational

C) All the above

D) None the above

16 / 100

Category: Chemistry

Q.84 The electron affinity of fluorine is less than chlorine as we move down the group, this deviation in behavior is due to its

A. Small size

B. Seven electron

C. Thick electronic cloud

D. All of these

17 / 100

Category: Chemistry

Q.110 Which of the following compound is an amide?

A. NH4CNO

B. NH2COCH2

C. NH2CONH2

D. NH2COONH2

18 / 100

Category: Chemistry

Q.124 Ethyne has which hybridization?

A. sp3

B.sp2

C. sp

D.sp^2d

19 / 100

Category: Chemistry Ch 2 Class 11

Which of the following can ba employed instead of filter papers?

Gooch Crucible

Sintered Glass Crucible

Both a and b

None of these

20 / 100

Category: Chemistry Ch 6 Class 11

Paramagnetism is due to:

Unpaired electron

Complete valence shell

Paired electron

Ionization

21 / 100

Category: Chemistry Ch 10 Class 11

The oxidation number of all the elements in the free state is:

NTS 2012
Chemistry
Electrochemistry
Elimination Tool:

A) 1

B) 3

C) 0

D)-1

22 / 100

Category: Chemistry Ch 1 Class 12

Periodic table is divided into groups A and 6:

To differentiate between normal and transition elements

To differentiate between metals and non-metals

To differentiate between d and f block elements

None of these

23 / 100

Category: Chemistry

Q.106 +G108 The Markownikof’s rule is applicable only on

A. 2-Butene

B. 2-Bromo-3-chloro-2-butene

C. 2,3-Dimethyl-2-butene

D. 2-Methyl-2-butene

24 / 100

Category: Chemistry Ch 6 Class 11

Bond energy between nitrogen atoms in N2 molecule is:

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

B) 820 kJ mol-1

C) 498 kJ mol-1

D) 347 kJ mol-1

E) 946 kJ mol-1

25 / 100

Category: Chemistry Ch 10 Class 11

In Balancing redox equation, the first thing is to:

PMC Sample 3
Chemistry
Electrochemistry
Elimination Tool:

A) Balance out the atoms on each side

B) Write the skeleton Equation

C) Calculate the oxidation Number

D) Identify the elements and their states

26 / 100

Category: Chemistry Ch 13 Class 12

Which of the following is used as coagulation for latex in rubber industry

Acetic acid

Amino acid

Ethyl alcohol

Rayon

27 / 100

Category: Chemistry Ch 8 Class 12

When CH3 is attached to the benzene ring, it makes the ring a:

PreMedPK MDCAT Mock 1
Chemistry
Hydrocarbons
Elimination Tool:

A) Good electrophile

B) Good nucleophile

C) Resonance hybrid

D) Extraordinary stable

28 / 100

Category: Chemistry Ch 10 Class 12

When Grignard reagent react with water they give as a product

Ether

Amine

Alkane

Alcohol

29 / 100

Category: Chemistry Ch 15 Class 12

What is formed by a series of complex reactions of ozone with water in the troposphere that are driven by sunlight?

NUMS 2019 Cancelled
Chemistry
Environmental Chemistry
Elimination Tool:

A) O radical

B) H radical

C) OH radical

D) H3O radical

30 / 100

Category: Chemistry Ch 8 Class 11

Which statement about the following equilibrium is correct?

2SO2 (g) + O2(g) ⇌ 2SO3(g) ΔH= – 395 KJ/ mole

NTS 2019
Chemistry
Chemical Equilibrium
Elimination Tool:

A) The value of Kp falls, with a rise in temperature

B) The value of Kp falls with an increase in pressure

C) The value of Kc is equal to Kp

D) The value of Kc remains constant with rise in temperature.

31 / 100

Category: Chemistry Ch 13 Class 12

The reaction CHCH + H2O + 3(O) shows the formation of ________.

NUMS 2018
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Acetic acid

B) Picric acid

C) Oxalic acid

D) Formic acid

32 / 100

Category: Chemistry Ch 2 Class 12

Which of the following is not true about caustic soda? a) It causes painful burns c) It is manufactured by Costner—Kellner process e) Both b and d

) It causes painful burns

It is manufactured by Costner—Kellner process

Both b and d

b) It has purgative smell

d) It is used os on anti-acid

33 / 100

Category: Chemistry Ch 14 Class 12

Which of the following is a monosaccharide ?

Maltose

Sucrose

lactose

Fructose

34 / 100

Category: Chemistry Ch 12 Class 12

Treatment of propionaldehyde with Dil. the NaOH solution gives:

NUMS 2016
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) CH3 CH2COOCH2C2H5

B) CH3 CH2 CHOH CH2 CH2 CHO

C) CH3 CH2 CH (OH) CH(CH3) CHO

D) CH3 CH2 COCH2 CH2 CHO

35 / 100

Category: Chemistry

Q.125 Standard electrode Potential is denoted by

A. E

B. E-1

C. E0

D.d

36 / 100

Category: Chemistry Ch 1 Class 11

Actual yield is always less than theoretical yield due to

PMC Practice 27
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) Operational losses

B) Reaction reversibility

C) Side reaction

D) All of these

37 / 100

Category: Chemistry Ch 1 Class 12

Hydrogen resembles with alkali metals in all respects except

NTS 2016 SMBBMC
Chemistry
Periodicity in Elements
Elimination Tool:

A) Half – filled valence shell

B) Formation of unipositive ion

C) Reducing nature

D) Valence shell electronic configuration

38 / 100

Category: Chemistry Ch 6 Class 11

The geometry of H2S and its dipole moment are:

NTS 2016 DUHS & JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) Angular and non – zero

B) Angular and zero

C) Linear and zero

D) Linear and non – zero

39 / 100

Category: Chemistry Ch 1 Class 12

The ionization energy increases from left to right in a period due to increase in?

PMC Practice 1
Chemistry
Periodicity in Elements
Elimination Tool:

A) Nuclear charge

B) Number of electrons

C) Atomic number

D) All of these

40 / 100

Category: Chemistry Ch 16 Class 12

Ozone Is

41 / 100

Category: Chemistry Ch 3 Class 11

Acetone and Chloroform are soluble into each other due to:

NUMS 2015
Chemistry
Chemical Bonding
States of Matter
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Hydrogen bonding

B) Dipole – dipole interaction

C) London forces

D) Both (a) and (b)

42 / 100

Category: Chemistry Ch 16 Class 12

Function of ozone Is?

To filter UV radiations

Act as a reducing agent

Act as an antibiotic

None of these

43 / 100

Category: Chemistry Ch 3 Class 12

The total number of transition elements is:

NUMS 2019 Reconduct
Chemistry
d and f Block Elements
Elimination Tool:

A) 58

B) 48

C) 30

D) 25

44 / 100

Category: Chemistry Ch 10 Class 12

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

NTS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) R-CI

B) R-F

C) R-Br

D) R-I

45 / 100

Category: Chemistry Ch 2 Class 12

Identify the correct statement:

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

A) Element sodium can be prepared and isolated by electrolyzing an aqueous solution of NaCl

B) Elemental Na is a strong oxidizing agent

C) Elemental Na is insoluble in NH3

D) Elemental Na is easily oxidizing

46 / 100

Category: Chemistry

The correct order of decreasing solubility of AgCI In A) Water B) 0.1 M NaCi C) 0.1 BaCl2 D) 0.1M NI-43
is?

a)D>A>B>C

b)D>C>B>A

c)B>A>D>C

d)A>D>B>C

47 / 100

Category: Chemistry Ch 9 Class 11

Ca(OH)2 is sparingly soluble having solubility value 6.5 x 10-6. What’ll be its solubility:

UHS 2017 Reconduct
Chemistry
Solution and Colloids
Elimination Tool:

A) 2.75 x 10-2

B) 2.75 x 102

C) 1.17 x 10-2

D) 3.63 x 103

48 / 100

Category: Chemistry Ch 11 Class 12

Ethers are very good:

Solvent

Oxidizing agen

Reducing agent

Dehydrating agent

49 / 100

Category: Chemistry Ch 2 Class 12

Only two elements are present in:

NTS 2011
Chemistry
s and p Block Elements
Elimination Tool:

A) Period 1

B) Period 2

C) Period 3

D) Period 4

50 / 100

Category: Chemistry Ch 1 Class 11

How many significant figures are there in 0.4793?

NTS 2018
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) 3

B) 4

C) 5

D) 6

51 / 100

Category: Chemistry Ch 9 Class 12

Benzene when reacted with chlorine in ultraviolet rays produces:

Hexacholorocyclohexane

P-dichlorobenzene

Benzotrichloride

Benzalchloride

52 / 100

Category: Chemistry Ch 3 Class 12

Which of the following forms a layer of oxide on its exposure to moisture?

Aluminum

Iron

Steel

Copper

53 / 100

Category: Chemistry Ch 10 Class 11

In the electrolysis of molten ZnCl2, how much Zn can be deposited at the cathode by the passage of 0.01 ampere for one hour?

NUMS 2017
Chemistry
Electrochemistry
Elimination Tool:

A) 0.002 g

B) 0.123 g

C) 0.012 g

D) 0.004 g

54 / 100

Category: Chemistry Ch 8 Class 12

Alkanes having five to seventeen carbon atoms per molecule are:

NTS 2013
Chemistry
Hydrocarbons
Elimination Tool:

A) liquids

B) solids

C) gases

D) semi solid wax

55 / 100

Category: Chemistry Ch 5 Class 11

Nitrogen and phosphorus have 3 of their valence electrons unpaired because of:

NTS 2014
Chemistry
Atomic Structure
Elimination Tool:

A) Auf bau principle

B) Heisenberg's principle

C) Hund’s rule

D) Planck’s statement

56 / 100

Category: Chemistry Ch 1 Class 12

The periodic table consists of:

NUMS 2014
Chemistry
Periodicity in Elements
Elimination Tool:

A) 7 horizontal series, 7 vertical series and 2 blocks

B) 8 horizontal series, 7 vertical series and 2 blocks

C) 7 horizontal series, 18 vertical series and 4 blocks

D) 8 horizontal series, 18 vertical series and 8 blocks

57 / 100

Category: Chemistry Ch 1 Class 11

) Which one of the following has no isotope

Hydrogen

Helium

Nitrogen

None

58 / 100

Category: Chemistry

Iso-Butyl alcohol has following carbon attached to hydroxyl group:

NUMS Mock 3
Chemistry
Alcohol, Phenols, and Ethers

A) Tertiary

B) Secondary

C) Quaternary

D) Primary

59 / 100

Category: Chemistry Ch 7 Class 11

Enthalpy of a compound is equal to its

NUMS 2016
Chemistry
Thermochemistry
Elimination Tool:

A) Heat of combustion

B) Heat of formation

C) Heat of solution

D) Heat of dilution

60 / 100

Category: Chemistry

Q.5 The smallest part of the crystal lattice has all the properties of the entire Crystals, this is called

A. unit

B. unit cell

C. unit crystal

D. all of these

61 / 100

Category: Chemistry Ch 11 Class 11

For a reaction 2A + 3B -> C
The rate law expression is given by rate = K [A]1[B]2. The order of the reaction with respect to A, B and overall order of reaction are:

NUMS 2015
Chemistry
Reaction Kinetics
Elimination Tool:

A) 2, 1, 3

B) 1, 2, 3

C) 0, 1, 2

D) 2, 1, 0

62 / 100

Category: Chemistry Ch 7 Class 11

Lattice Energy of ionic compounds are found by

PMC Sample 3
Chemistry
Chemical Bonding
Thermochemistry
Elimination Tool:

A) Hess' law

B) Born Habers Cycle

C) Law of Mass action

D) Law of conservation of mass

63 / 100

Category: Chemistry Ch 7 Class 12

IUPAC name of Divinyl acetylene is:

NUMS 2019 Reconduct
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) 1, 5 – Hexadiyne – 3 – ene

B) 1, 5 – Hexadiene 3 – yne

C) 3 – Hexene – 1,5 – diyne

D) 3 – Hexyne – 1 , 5 – diene

64 / 100

Category: Chemistry Ch 11 Class 11

The rate of a reaction in general can be increased by all the following factors except:

NUMS 2015
Chemistry
Reaction Kinetics
Elimination Tool:

A) By increasing temperature

B) Using a suitable catalyst

C) By an increase in activation energy

D) By increasing conc. Of reactants

65 / 100

Category: Chemistry Ch 7 Class 11

During a chemical reaction, heat of Formation Is:

Evolved

Absorbed

Either Evolved or Absorbed

None of the above

66 / 100

Category: Chemistry Ch 10 Class 12

Grignard reagent when added to dry ice gives:

Primary Alcohol

Alkyl Halide

Tertiary Alcohol

Carboxylic Acid

67 / 100

Category: Chemistry Ch 2 Class 12

Which one of the following statements is true?

NUMS 2016
Chemistry
s and p Block Elements
Elimination Tool:

A) All nitrates of Group II metals are decomposed by heat to give the oxide NO2.

B) Aqueous sodium nitrate in acidic to litmus.

C) Aqueous ammonium nitrate is alkaline to litmus.

D) The alkali metal nitrates are insoluble in water.

68 / 100

Category: Chemistry Ch 1 Class 12

Non-stoichiometric compounds are formed by:

NTS 2013
Chemistry
Periodicity in Elements
Elimination Tool:

A) Only alkali metals

B) Only transition elements

C) Only noble gases

D) None of the above

69 / 100

Category: Chemistry Ch 5 Class 11

The difference between soft and hard X-rays is of:

NUMS 2016
Physics
Atomic Structure
Elimination Tool:

A) Velocity

B) Intensity

C) Frequency

D) Polarization

70 / 100

Category: Chemistry Ch 8 Class 12

Sp hybridization is found In which of the following?

Ethane

Ethene

Ethyne

None

71 / 100

Category: Chemistry

Q.24 Non polar covalent bond is formed b/w

A. homonuclear diatomic molecules

B. heteronuclear diatomic molecules

C. similar atoms

D. dissimilar atoms

72 / 100

Category: Chemistry Ch 10 Class 12

Alkyl halides can also be obtained by halogenation of ________.

NUMS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Alcohols

B) Alkenes

C) Alkanes

D) Ketones

73 / 100

Category: Chemistry Ch 7 Class 11

Through what phenomenons does heat flow?

PMC Sample 2
Chemistry
Thermochemistry
Elimination Tool:

A) Conduction

B) Convection

C) Radiation

D) All of these

74 / 100

Category: Chemistry Ch 11 Class 12

Which of the following is TRUE regarding Methyl Alcohol?

NTS 2011
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) It is a colorless, volatile, thin liquid with specific gravity 0.796 at 15°C

B) It is used for low-temperature thermometers and as a fuel substitute

C) It is extensively used in the formation of different beverages

D) It is used as a base for perfumes

75 / 100

Category: Chemistry Ch 3 Class 12

Aluminum silicate is used In:

Cement

Glass

Urea

None of these

76 / 100

Category: Chemistry Ch 13 Class 12

Fatty Acids are:

Aliphatic Monocarboxylic Acids

Obtained from sugars

Contain a suffix "al"

With low boiling point

77 / 100

Category: Chemistry

The enthalpy change of the reaction

H2(g) + ½ O2 -> H2O (l)

under standard conditions is:

NUMS Mock 1
Chemistry
Thermochemistry

A) Enthalpy change of formation of water

B) Enthalpy change of neutralization

C) Both; Enthalpy change of combustion of Hydrogen and enthalpy change of formation of water

D) Enthalpy change of combustion of Hydrogen

78 / 100

Category: Chemistry

Hydration energy of sodium Ion Is:

321 Kj/mol

406 Kj/mol

1032 kJ/mil

940 Kj/mol

79 / 100

Category: Chemistry Ch 10 Class 12

Alkyl Halides that go through SN1 reactions are

Primary

Secondary

Tertiary

All of these

80 / 100

Category: Chemistry Ch 4 Class 11

Which of the following compound has the highest boiling point?

Water

HCL

Ammonia

81 / 100

Category: Chemistry

AgCI is in water.

Partially soluble b)

Completely soluble

Not soluble

None of these

82 / 100

Category: Chemistry Ch 3 Class 11

When Gypsum is heated to about 100° C, it losses some water of crystallization and becomes:

NTS 2011
Chemistry
States of Matter – Gases, Liquids and Solids
s and p Block Elements
Elimination Tool:

A) Epsom salt

B) Kieserite

C) Plaster of Paris

D) Bleaching Powder

83 / 100

Category: Chemistry Ch 4 Class 11

The nature of Binding Force in Ionic Crystals is

PMC Sample 1
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Magnetic

B) Repulsive

C) Electrostatic

D) Weak

84 / 100

Category: Chemistry Ch 6 Class 11

Geometry of SF6 is:

Octahedral

Hexagonal

Decahedral

Trigonal

85 / 100

Category: Chemistry Ch 1 Class 11

Mass of an atom ranges from?

PMC Practice 20
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) 1 x 10-28 kg to 1 x 10-22 kg

B) 1 x 10-26 kg to 1 x 10-23 kg

C) 1 x 10-27 kg to 1 x 10-24 kg

D) 1.6373 x 10-27 kg to 1 x 10-25 kg

86 / 100

Category: Chemistry Ch 10 Class 12

Markownikoff’s rule is best applicable to the reaction between

NUMS 2018
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) C3H6+ Br2

B) C2H4+ HCl

C) C3H8+ Br2

D) C3H6+ HBr

87 / 100

Category: Chemistry

Tincture of Iodine is:

NUMS Mock 3
Chemistry
Aldehydes and Ketones

A) In alcohol with CHI3

B) In alcohol with I2

C) In ethanol and water mixture with KI and I2

D) In KI and CH3I

88 / 100

Category: Chemistry

Strongest acid among the following is:

NUMS Mock 4
Chemistry
Carboxylic Acids and its Derivatives

A) HCOOH

B) CH3COOH

C) (CH3)2CHCOOH

D) (CH3)3CCOOH

89 / 100

Category: Chemistry Ch 1 Class 12

Borax exists in nature as:

NTS 2013
Chemistry
Periodicity in Elements
Elimination Tool:

A) Na2B4O7.10H2O

B) Na2B4O7.7H2O

C) Na2B4O7.5H2O

D) Na2B4O7.3H2O

90 / 100

Category: Chemistry Ch 8 Class 12

The electrophilic reactions of Benzene are:

PreMedPK MDCAT Mock 2
Chemistry
Hydrocarbons
Elimination Tool:

A) Halogenation

B) Nitration

C) Sulphonation

D) Alkylation and Acylation

E) All of these

91 / 100

Category: Chemistry Ch 5 Class 11

Which of the following is the electronic configuration of 19K?

NUMS 2016
Chemistry
Atomic Structure
Elimination Tool:

A) 1s2, 2s2, 2p6, 3s2, 3p6, 4s2

B) 1s2, 2s2, 2p6, 3s2, 3p6, 3s2, 3d1

C) 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d5

D) 1s2, 2s2, 2p6, 3s2, 3p6, 4s1

92 / 100

Category: Chemistry Ch 6 Class 11

Which one of these is paramagnetic?

None of these

93 / 100

Category: Chemistry

Which of the following statements is true?

NUMS Mock 2
Chemistry
s and p Block Elements

A) Alkali metal hydroxides are stable to heat except LiOH

B) CaOH is a stronger base than NaOH

C) When NaOH is made the gas released at the cathode is C12

D) NaOH is named as caustic soda because it reacts with fats to form soap.

94 / 100

Category: Chemistry Ch 10 Class 11

In Lead-Acid battery, product formed at anode during discharging is

PbSO4

SO2

SO4

95 / 100

Category: Chemistry Ch 5 Class 12

Which of the following halogen does not form stable oxyacids?

96 / 100

Category: Chemistry Ch 15 Class 12

Genetic mutations occur in:

NUMS 2016
Chemistry
Chemistry of Life
Elimination Tool:

A) RNA

B) Protein

C) DNA

D) All of the above

97 / 100

Category: Chemistry Ch 1 Class 11

The atoms of hemoglobin is heavier than H-atoms

PMC Practice 23
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) 67,000 times

B) 68,000 times

C) 65,000 times

D) 69,000 times

98 / 100

Category: Chemistry

Which one of the following is not an isotope of hydrogen:

NUMS Mock 2
Chemistry
Atomic Structure

A) Deuterium

B) Tritium

C) Ortho hydrogen

D) None of these

99 / 100

Category: Chemistry Ch 9 Class 11

Lowering of vapor pressure is directly proportional to?

Number of solute particles

Temperature

Chemical Formula

Number of solvent particle

100 / 100

Category: Chemistry Ch 9 Class 12

The ratio of σ to π bonds in benzene is:

NUMS 2019 Reconduct
Chemistry
Hydrocarbons
Elimination Tool:

A) 4:1

B) 1:4

C) 1:3

D) 3:1

Your score is

The average score is 55%

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