Chemistry Practice Tests 4 - PLS Academy

Chemistry Practice Test 4

Chemistry Practice Test 4 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 electrochemistry, redox reactions, solutions, and molarity calculations, helping students improve accuracy and problem-solving skills.

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Chemistry Practice Test 4

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1 / 100

Category: Chemistry Ch 2 Class 12

Which of the following has the highest value of electronegativity?

PMC 2020
Chemistry
s and p Block Elements
Chemical Bonding
Elimination Tool:

A) I

B) Br

C) Cl

D) F

2 / 100

Category: Chemistry Ch 5 Class 11

Which of the following best describes the emission spectrum of atomic hydrogen?

NTS 2015 DUHS and JSMU
Chemistry
Atomic Structure
Elimination Tool:

A) a discrete series of lines of equal intensity and equally spaced with respect to wavelength equally

B) a series of only four lines

C) a continuous emission of radiation of all frequencies

D) several discrete series of lines with both intensity and spacings between lines decreasing as the wavenumber increases with each series.

3 / 100

Category: Chemistry

Which of the following will react with water?

NUMS Mock 1
Chemistry
Introduction to Fundamental Concepts of Chemistry

A) CHCl3

B) Cl3CCHO

C) CHI4

D) ClCH2CH2Cl

4 / 100

Category: Chemistry Ch 7 Class 12

Which one of them is used as an automobile antifreeze

PMC Sample 1
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Ethanol

B) ethene

C) ethylene glycol

D) propene

5 / 100

Category: Chemistry Ch 6 Class 12

d-d transitions in transition metals gives?

Crystalline structure

characteristic color

Hardness

d) Higher reactivity

6 / 100

Category: Chemistry Ch 9 Class 12

How many Dewar Structure of Benzene are present?

Infinite

7 / 100

Category: Chemistry Ch 14 Class 12

Formula of fructose is:

C6H1206

C4H204n

C5H10O5

C5H10O6

8 / 100

Category: Chemistry Ch 10 Class 12

Alkyl Halides that go through SN1 reactions are

Primary

Secondary

Tertiary

All of these

9 / 100

Category: Chemistry

Q.92 Change in Pressure will only affect fhe.substances which are in

A. Liquid stale

B. Solid State

C.Plasma state

D. Gaseous State

10 / 100

Category: Chemistry Ch 2 Class 12

7) Gypsum supplies to soil

Carbon

Sulpuhr

Nitrogen

Calcium

Both b and d

11 / 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?

12 / 100

Category: Chemistry Ch 14 Class 12

Left-handed helix in proteins secondary structure is called as ______ :

PMC Practice 4
Chemistry
Macromolecules
Elimination Tool:

A) Alpha helix

B) Beta helix

C) Spiral

D) Concentrate

13 / 100

Category: Chemistry

Q.142 In the production of wrought iron Mg Si and P are removed in the form of

A. Oxides

B. Silicates

C. Slag

D. Carbonates

14 / 100

Category: Chemistry Ch 14 Class 12

Chlorine is manufactured commercially by the electrolysis of aqueous sodium chloride (brine). Which other products are made in this process?

NTS 2010
Chemistry
Macromolecules
Elimination Tool:

A) Hydrochloric acid and hydrogen

B) Hydrogen and sodium

C) Hydrogen and sodium hydroxide

D) Sodium and sodium hydroxide

15 / 100

Category: Chemistry Ch 11 Class 12

Dehydration of ethanol at 100 oC in the presence of concentrated H2SO4 gives:

NUMS 2019 Reconduct
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Ethene

B) Ethane

C) Ethyne

D) Ether

16 / 100

Category: Chemistry

At Equilibrium, which of the following reactions is not affected by pressure?

NUMS Mock 3
Chemistry
Chemical Equilibrium

A) A

B) B

C) C

D) D

17 / 100

Category: Chemistry

The following changes to the system at equilibrium have no effect on Kc except:

NUMS Mock 4
Chemistry
Chemical Equilibrium

A) Increasing reactant concentrations

B) Equal number of reactant and product gas molecules

C) Increasing temperature

D) Using a catalyst

18 / 100

Category: Chemistry Ch 8 Class 12

In which of the following cases are the benzene rings isolated?

PreMedPK MDCAT Mock 2
Chemistry
Hydrocarbons
Elimination Tool:

A) Naphthalene

B) Phenanthrene

C) Anthracene

D) Triphenylmethane

19 / 100

Category: Chemistry Ch 3 Class 11

A solid melts sharply just above 100 degree centigrade. it does not conduct electricity even when molten. It has weak Vander waal’s forces. What is the structure of the solid most likely to be?

NTS 2015 SMBBMC
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) An atomic crystal

B) ionic crystal

C) a molecular crystal

D) metallic

20 / 100

Category: Chemistry

Q.74 The specific site at which substrate is attached on the enzyme and converted into product is called as_________________?

A. Reaction site

B. Active site

C. Binding site

D. None of these

21 / 100

Category: Chemistry Ch 3 Class 11

Comparative rates of diffusion of He and SO2 will be _______.

NTS 2012
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) 8

B) 2

C) 4

D) 16

22 / 100

Category: Chemistry

Q.4 Melting and boiling point of transition elements are higher due to

A. Higher binding energies

B Strong metallic bonding

C. Hardness

D. All of these

23 / 100

Category: Chemistry Ch 7 Class 12

IUPAC name of the compound (CH3)2-CH-CH(C2H5)-C(CH3)3 is :

NTS 2015 SMBBMC
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) 3-ethyl-2,2,4-trimethyl pentane

B) 3-ethyl-2,2,4-trimethyl pentene

C) 3-ethyl- 2,4-dimethyl pentane

D) 4-ethyl, 3 methyl hexane

24 / 100

Category: Chemistry Ch 3 Class 12

Prussian blue is:

NUMS 2014
Chemistry
d and f Block Elements
Elimination Tool:

A) K2Fe[FeCN6]

B) K4[FeCN6]

C) Fe4[Fe(CN)6] 3xH2O

D) K3FeCN6

25 / 100

Category: Chemistry Ch 11 Class 12

With which of the following alcohols do not react to form alkyl halides?

HCl

SOCl2

Br2

PCl3

26 / 100

Category: Chemistry

Which of the following will not undergo aldol condensation?

NUMS Mock 2
Chemistry
Aldehydes and Ketones

A) Acetaldehyde

B) Propanaldehyde

C) Benzaldehyde

D) Trideuteroacetaldehyde

27 / 100

Category: Chemistry Ch 10 Class 11

X is a salt that decomposes in water.

What is the reason for its decomposition?
e-+ X3+→ X2+ Ecell= 1.91 V

NUMS 2018
Chemistry
Electrochemistry
Elimination Tool:

A) This potential oxidizes salt

B) This potential reduces salt

C) This potential reduces water

D) This potential oxidizes water

28 / 100

Category: Chemistry Ch 6 Class 11

Which of the following hybrid orbitals has maximum “s” character?

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

A) Sp3 hybrid orbital

B) Sp2 hybrid orbital

C) Sp hybrid orbital

D) Dsp2 hybrid orbital

29 / 100

Category: Chemistry Ch 13 Class 12

Solubility of carboxylic acids in water decrease with

Decrease in molecular mass

Increase in molecular mass

Both a and b

None of these

30 / 100

Category: Chemistry Ch 14 Class 12

Which of the following is not a disaccharide?

Sucrose

Lactose

Raffinose

Dextrin

31 / 100

Category: Chemistry Ch 15 Class 12

Free Nitrogen and Oxygen are present in atmosphere but they do not react with each other under normal conditions because:

UHS 2019
Chemistry
Environmental Chemistry
Elimination Tool:

A) Nitrogen requires a catalyst

B) Oxygen is very inactive

C) Oxygen is found in less concentration

D) Nitrogen is highly inactive gas

32 / 100

Category: Chemistry Ch 4 Class 11

Which one of the following is an example of covalent solid?

NaCI

Diamond

Mercury

All of these

33 / 100

Category: Chemistry

Q.108 Temperature and volume in an experiment are part of

A. Surroundings

B. System

C. State of a system

D. All of these

34 / 100

Category: Chemistry

Which one of the following molecules has sp3 hybridization?

NUMS Mock 2
Chemistry
Chemical Bonding

A) CH4

B) C2H4

C) CO2

D) C2H2

35 / 100

Category: Chemistry

Q.177 Fluorine has highest electronegativity value that is

A. 3.4

B.. 4

C. 1.2

D. 2.6

36 / 100

Category: Chemistry Ch 9 Class 12

Which of the following gases is used for welding purpose:

NTS 2019
Chemistry
Hydrocarbons
Elimination Tool:

A) ethene

B) ethane

C) propane

D) ethyne

37 / 100

Category: Chemistry

The reaction: Cl2 + H2O→ HCl + HOCl is an example of:

NUMS Mock 4
Chemistry
Electrochemistry

A) Oxidation reaction

B) Reduction reaction

C) Auto-oxidation and reduction reaction

D) Substitution reaction

38 / 100

Category: Chemistry Ch 1 Class 12

Hydrogen resembles the elements of groups:

NTS 2019
Chemistry
Periodicity in Elements
Elimination Tool:

A) I-A, V-A and VIll-A

B) I-A, IV A and Vl-A

C) I-A, II-A and VIl-A

D) I-A, IV-A and VIl-A

39 / 100

Category: Chemistry

The amount (in liters) of Oxygen at STP that is required for the combustion of 4gm of ethylene is :

NUMS Mock 2
Chemistry
Stoichiometry

A) 96 liters

B) 9.6 liters

C) 44.8 liters

D) 7.2 liters

40 / 100

Category: Chemistry Ch 10 Class 12

The reduction of nitrile produced a compound of formula C3H7NH2. Which one of the following compounds would be produced if the same nitrile was hydrolyzed by heating with dilute hydrochloric acid?

NUMS 2016
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) CH3CONH2

B) CH3CH2NH2

C) (CH3)2CHCO2H

D) CH3CH2CO2H

41 / 100

Category: Chemistry Ch 6 Class 11

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

NTS 2018
Chemistry
Chemical Bonding
Elimination Tool:

A) 4 hydrogen bonds

B) 3 hydrogen bonds

C) 2 hydrogen bonds

C) 1 hydrogen bonds

42 / 100

Category: Chemistry Ch 10 Class 12

The order of reactivities of the following alkyl halides for an SN2 reaction is:

NUMS 2016
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) RF > RCl > RBr > RI

B) RF > RBR > RCl > RI

C) RCl > RBr > RF > RI

D) RI > RBr > RCl > RF

43 / 100

Category: Chemistry Ch 10 Class 12

(NI13) is a:

Nucleophile

Neutrophile

Electrophile

Electrolyte

44 / 100

Category: Chemistry Ch 10 Class 11

The hydrogen gas bubbling into one molar solution of HCl has a pressure of

PMC Sample 3
Chemistry
Electrochemistry
Elimination Tool:

A) 2atm

B) 780 mmHg

C) 19 Psi

D) 1 atm

45 / 100

Category: Chemistry Ch 4 Class 11

When animals inhale air, oxygen will move into the lungs due to difference in partial pressure of oxygen in lungs and atmosphere. This obeys

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

A) Pascal's law

B) Dalton's law

C) Charles's law

D) Bohr's law

46 / 100

Category: Chemistry Ch 9 Class 11

Elevation of the boiling point is a ____ property.

PMC 2021 Tested
Chemistry
Solution and Colloids
Elimination Tool:

A) Colligative

B) None of these

C) Constitutive

D) Additive

47 / 100

Category: Chemistry Ch 8 Class 11

A solution has pH of 10. What is the value of [OH-]?

10^4

10^-4

10^6

10^-6

48 / 100

Category: Chemistry

Q.103 In phenol, the hydroxyl group is attached to

A. Phenyl group

B. Benzoyl group

C. Benzyl group

D. Benzal group

49 / 100

Category: Chemistry

Q.92 The correct statement about 2px and 2pz is

A. Both are shells of same atom

B. Both are degenerate orbitals

C. Both subshell have same energy

D. Both orbitals are parallel to each other

50 / 100

Category: Chemistry Ch 1 Class 11

The unit used to express the relative atomic mass is called

PMC Practice 4
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) Gram unit

B) Avogadro's number

C) Atomic mass

D) Atomic mass unit

51 / 100

Category: Chemistry Ch 9 Class 12

Which catalyst is used to oxidize benzene rings?

NUMS 2019 Reconduct
Chemistry
Hydrocarbons
Elimination Tool:

A) FeBr3

B) V2O5

C) Fe + Al2O3

D) Raney Ni

52 / 100

Category: Chemistry Ch 13 Class 12

In IUPAC nomenclature, Carboxylic acids are named as_______?

PMC Sample 3
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Alkoxy acid

B) Alkanoic acid

C) Alkyl carboxylic acid

D) Alkoxylate acid

53 / 100

Category: Chemistry Ch 11 Class 12

Which of the following is more soluble in water?

PMC Sample 1
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Ethanol

B) Phenol

C) Hexanol

D) Dimethyl ether

54 / 100

Category: Chemistry

Q.165 Carboxylic acids are formed by the hydrolysis of_

A. Ester Nitriles

B. Nitriles, amines

C. Alkenes, Alkynes

D. Esters, Alcohols

55 / 100

Category: Chemistry Ch 11 Class 12

2-methyl 2-propanol is:

Secondary butyl alcohol

Tertiary butyl alcohol

Primary butyl alcohol

Quaternary butyl alcohol

56 / 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

57 / 100

Category: Chemistry Ch 7 Class 11

The enthalpy of certain reactions at 273 K is -20.75 kJ. The enthalpy of the same reaction at 373 K (if heat capacities of reactants and products are the same) will be:

NTS 2017
Chemistry
Thermochemistry
Elimination Tool:

A) －20.75 kJ

B) -2075 kJ

C) Zero

D) －20.75 x 373/273 kJ

58 / 100

Category: Chemistry Ch 5 Class 12

The halogens are known as:

Salt formers

Rare earth elements

Alkali metals

Noble gases

59 / 100

Category: Chemistry Ch 15 Class 12

What is the catalyst used in the Haber process?

H₂ + N₂ ⟶ NH₃

PMC 2021 Tested
Chemistry
Industrial Chemistry
Elimination Tool:

A) Chlorine

B) Iron

C) Magnesium

D) Calcium

60 / 100

Category: Chemistry Ch 7 Class 11

Burning of fuel is a

Endothermic

Exothermic

Both a & b

None of these

61 / 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

62 / 100

Category: Chemistry Ch 5 Class 12

Electrons are most loosely bound in which of the following halogen?

Iodine

Bromine

Chlorine

Fluorine

63 / 100

Category: Chemistry Ch 3 Class 12

Which of the following is not an interstitial compound?

NTS 2014
Chemistry
d and f Block Elements
Elimination Tool:

A) Cu-Zn

B) Cu-Zn-Sn

C) TiH1.73

D) V2O5

64 / 100

Category: Chemistry

The influence of temperature on reaction rate is predicted by:

NUMS Mock 1
Chemistry
Reaction Kinetics

A) Free energy change

B) Van Der Waals equation

C) Arrhenius equation

D) Kinetic equation

65 / 100

Category: Chemistry Ch 8 Class 11

At equilibrium, which of the following reactions is not affected by pressure?

NUMS 2016
Chemistry
Chemical Equilibrium
Elimination Tool:

A) ½ N2(g) + ½ O2 (g)⇌ NO(g)

B) PCl5(g) ⇌ PCl3(g) + Cl2(g)

C) 2NO2 (g) ⇌ N2O4(g)

D) SO2Cl2(g) ⇌ SO2(g) + Cl2(g)

66 / 100

Category: Chemistry

Which derivative of benzene shows maximum reactivity in electrophilic substitution reactions?

NUMS Mock 1
Chemistry
Hydrocarbons

A) Benzoic acid

B) Methyl benzene

C) Benzaldehyde

D) Nitrobenzene

67 / 100

Category: Chemistry Ch 10 Class 12

Order of reactivity of halogens towards alkanes is:

NUMS 2019 Reconduct
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) F2> I2> Br2> Cl2

B) F2> Br2> Cl2> I2

C) F2> Cl2> Br2> I2

D) F2> Cl2> I2> Br2

68 / 100

Category: Chemistry Ch 12 Class 12

Paraldehyde is formed by:

Formaldehyde

Acetaldehyde

Acetone

None of these

69 / 100

Category: Chemistry Ch 6 Class 11

The number of sigma and pi bonds in 1-butene-3-yne?

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) 5 sigma and 5 pi

B) 7 sigma and 3 pi

C) 8 sigma and 2 pi

D) 6 sigma and 4 pi

70 / 100

Category: Chemistry

The common features, among the species CN, CO and NO are:

NUMS Mock 3
Chemistry
Chemical Bonding

A) Bond order three and Isoelectronic

B) Bond order three and weak field ligands

C) Bond order two andπacceptors

D) Isoelectronic and weak field ligands

71 / 100

Category: Chemistry

Q.20 The order of reaction for which hall-life is inversely proportional to the concentration of reaction is

A. Second Order

B. Zero Order

C. First Order

D. Third Order

72 / 100

Category: Chemistry Ch 13 Class 12

What is correct order of acidic strength?

Carboxylic acid > alcohols > phenol > water

Carboxylic acid > phenol > water > alcohol

Water > alcohol > carboxylic acid > phenol

Phenol > alcohol > water > carboxylic acid

73 / 100

Category: Chemistry Ch 13 Class 12

High molecular mass organic compounds, upon hydrolysis yield amino acids are called _______.

PMC Sample 3
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Carbohydrates

B) Lipids

C) Proteins

D) DNA

74 / 100

Category: Chemistry Ch 9 Class 12

The unhybridized p orbitals of benzene are present in the form of _________.

PMC Practice 2
Chemistry
Hydrocarbons
Elimination Tool:

A) Between the C-C bonds of benzene

B) Above and below the carbon bonds

C) In the form of a cloud above and below the benzene ring

D) None of these options is correct

75 / 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

76 / 100

Category: Chemistry Ch 6 Class 11

Which of the following molecules have zero Dipole moments?

NTS 2011
Chemistry
Chemical Bonding
Elimination Tool:

A) CCl4

B) CO2

C) Cl2

D) C6H6

E) All of the above

77 / 100

Category: Chemistry

Which of the following has maximum Hydration power?

NUMS Mock 3
Chemistry
Chemical Bonding

A) Na+

B) K+

C) Be2+

D) Ca+2

78 / 100

Category: Chemistry Ch 6 Class 11

The compound in which carbon uses only its sp3 – hybrid orbitals for bond formation is?

NTS 2015 DUHS and JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) HCOOH

B) (CH3)3COH

C) NH2CONH2

D) (CH3)3C – CHO

79 / 100

Category: Chemistry Ch 4 Class 11

Which one Is not possible a)

Ionic crystal

Covalent crystal

Metallic crystal

Atomic-crystal

80 / 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

81 / 100

Category: Chemistry Ch 16 Class 12

Which of the following gases has least concentration in air a

CO2

82 / 100

Category: Chemistry Ch 10 Class 11

Two half cells of a galvanic cell are connected with a salt bridge, the electrons flow from:

Anode to cathode through external circuit

Cathode to anode through external circuit

Anode to cathode through salt bridge

Cathode to anode through salt bridge

83 / 100

Category: Chemistry Ch 2 Class 12

The basic character of alkali metal oxides:

Decreases down the group

Remains same

Increases down the group

None of these

84 / 100

Category: Chemistry Ch 8 Class 11

85 / 100

Category: Chemistry Ch 1 Class 12

Covalent hydrides are:

Gaseous

Solid

Liquids

Both a & c

86 / 100

Category: Chemistry Ch 11 Class 11

Metaboric acid when heated produces:

NTS 2016 DUHS & JSMU
Chemistry
Acids, Bases and Salts
Elimination Tool:

A) B2O3

B) HBO2

C) H2B4O7

D) H3BO3

87 / 100

Category: Chemistry Ch 6 Class 11

Which of the following has maximum Ionization energy?

88 / 100

Category: Chemistry Ch 7 Class 12

Which of the following is the correct IUPAC name?

NTS 2016 SMBBMC
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) 3 – Ethyl – 4, 4-dimethylheptane

B) 4,4 – Dimethyl – 3 – ethylheptane

C) 5 – Ethyl – 4, 4 – dimethylheptane

D) 2, 3 – diethylheptane

89 / 100

Category: Chemistry Ch 6 Class 11

The raindrop acquires a spherical shape and ink spread over blotting paper due to:

NTS 2010
Chemistry
Chemical Bonding
Elimination Tool:

A) Surface tension

B) Adhesive forces

C) Viscosity

D) Polarity

90 / 100

Category: Chemistry Ch 9 Class 12

Which derivative of benzene shows maximum reactivity in electrophilic substitution reactions?

UHS 2019
Chemistry
Hydrocarbons
Elimination Tool:

A) Benzoic acid

B) Methyl benzene

C) Benzaldehyde

D) Nitrobenzene

91 / 100

Category: Chemistry Ch 8 Class 11

The Kcunits for the reaction N2(g) + 3H2(g) -> 2NH3(g) are:

NUMS 2019 Reconduct
Chemistry
Chemical Equilibrium
Elimination Tool:

A) mol-1dm6

B) mol-2dm3

C) mol-2dm6

D) mol-1dm3

92 / 100

Category: Chemistry Ch 11 Class 12

Which of the following alcohol does not get oxidized when it reacts with K₂Cr₂O₇/H₂SO₄?

PMC Sample 2
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) CH₃C(CH₃)₂OH

B) CH₃CH(CH₃)OH

C) CH₃OH

D) C₂H₅OH

93 / 100

Category: Chemistry

Q.90 Which of the following propefties belong to acetic acid?

A. Colourless liquid, odourless, sour taste

B. Bright colour bituer taste

C.Colourless solid, sour taste, pungent smell

D. All are incórreet

94 / 100

Category: Chemistry

Q.2 The difference in the E.N values of the bonded atoms b/w two atoms is an index to_of covalent bond

A. polar nature

B. non-polar nature

C. strength

D. nature

95 / 100

Category: Chemistry

Q.139 Redox Reaction are actually transfer of

A. Electrons

B. Charges

C. Energy

D. Hydrogen lons

96 / 100

Category: Chemistry Ch 11 Class 12

Treatment of ethene with cold sulphuric acid, followed by reaction with boiling water, yields:

UHS 2019
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Ethane

B) Ethanal

C) Ethanol

D) Ethyne

97 / 100

Category: Chemistry Ch 15 Class 12

Which in not woody raw material

Poplar

) Hard wood

Fir

Rag

98 / 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

99 / 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

100 / 100

Category: Chemistry Ch 1 Class 12

NaNO3 on heating gives:

NUMS 2015
Chemistry
Periodicity in Elements
Elimination Tool:

A) O2

B) NO2

C) O2 + NO2

D) NaNO2 + O2

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The average score is 57%

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