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Question Bank

DAV Schools PGT (Chemistry) Exam - English

Duration: 90 · Questions: 55 · Max Marks: 55 · Language: 1

View DAV Schools PGT (Chemistry) 2026 Exam Page

Verbal & Non-Verbal Reasoning

1
How many such pairs of letters are there in the word ‘CLEANLINESS’ each of the which has as many letters between them in the word as they have in the English alphabet, in the same sequence?
  1. A.Two
  2. B.Three
  3. C.Five
  4. D.Four
  5. E.None of these
2
Team A has scored more goals than Team B
Team C has scored fewer goals than Team B
Team A has scored fewer goals than Team C .
If the first two statements are true, the third statement is
  1. A.True
  2. B.False
  3. C.Uncertain
  4. D.None
3
If it is possible to make only one meaningful word with the second, the third, the sixth and the eight letters of the word FRAGMENT using each only once, which of the following will be the third letter of that word ? If no such word can be formed, give ‘X’ as the answer and if more than one such word can be formed, give ‘Y’ as the answer.
  1. A.A
  2. B.E
  3. C.T
  4. D.X
  5. E.Y
4
How many such letters are there in the word ORIENTAL each of which is as far away from the beginning of the word as when they are arranged alphabetically?
  1. A.None            
  2. B.One         
  3. C.Two       
  4. D.Three        
  5. E.More than three
5
How many such pairs of letters in the word CREDIT each of which has as many letters between them in the word as in the English alphabet?
  1. A.None
  2. B.One
  3. C.Two
  4. D.Three
  5. E.More than three
6
How many meaningful words can be made from the letters ‘LMEA’ using each letter only once in each word?
  1. A.None
  2. B.One
  3. C.Two
  4. D.Three
  5. E.More than three
7
If it is possible to make only one meaningful word with the first, the second, the seventh and the eighth letters of the word TEMPORAL, which of the following will be the first letter of that word? If more than one such word can be made, give ‘Y’ as the answer and if no such word can be made, give ‘X’ as the answer.
  1. A.T
  2. B.L
  3. C.E
  4. D.Y
  5. E.X
8
What is the next number in the series: 2, 4, 6, 8, ?
  1. A.9
  2. B.11
  3. C.10
  4. D.12
9
What comes next in the series: A, B, C, D, ?
  1. A.F
  2. B.E
  3. C.G
  4. D.H
10
What is the missing number in the series: 1, 4, 9, 16, ?
  1. A.20
  2. B.36
  3. C.30
  4. D.25
11
What follows in the series: 3, 6, 9, 12, ?
  1. A.13
  2. B.15
  3. C.14
  4. D.16
12
What is the next term in the series: J, F, M, A, ?
  1. A.M
  2. B.J
  3. C.S
  4. D.O
13
What comes next: 5, 10, 15, 20, ?
  1. A.25
  2. B.30
  3. C.35
  4. D.40
14
What is the missing letter: A, C, E, G, ?
  1. A.H
  2. B.J
  3. C.I
  4. D.K
15
What follows: 1, 8, 27, 64, ?
  1. A.81
  2. B.100
  3. C.125
  4. D.144

Chemistry

1
Which branch of science mainly deals with the composition, structure, properties and transformations of matter?
  1. A.Chemistry
  2. B.Physics
  3. C.Biology
  4. D.Astronomy
2
Which of the following is classified as matter?
  1. A.Heat
  2. B.Light
  3. C.Air
  4. D.Sound
3
The law of conservation of mass was proposed by:
  1. A.Dalton
  2. B.Proust
  3. C.Lavoisier
  4. D.Avogadro
4
According to the law of conservation of mass:
  1. A.Mass can be created during a reaction
  2. B.Total mass remains constant during a chemical reaction
  3. C.Mass can be destroyed during a reaction
  4. D.Products always have less mass than reactants
5
The law of definite proportions was proposed by:
  1. A.Gay-Lussac
  2. B.Rutherford
  3. C.Boyle
  4. D.Proust
6
According to the law of definite proportions, a chemical compound always contains the same elements combined in:
  1. A.Fixed proportion by mass
  2. B.Different volumes
  3. C.Variable atomic ratios
  4. D.Random proportions
7
The law of multiple proportions was proposed by:
  1. A.Dalton
  2. B.Lavoisier
  3. C.Proust
  4. D.Berzelius
8
According to Dalton's atomic theory, atoms of the same element are considered to be:
  1. A.Chemically different
  2. B.Identical in mass and properties
  3. C.Positively charged
  4. D.Divisible into molecules
9
Which discovery showed that Dalton's statement about the indivisibility of atoms was not completely correct?
  1. A.Discovery of isotopes
  2. B.Discovery of subatomic particles
  3. C.Discovery of molecules
  4. D.Discovery of compounds
10
One atomic mass unit is defined as:
  1. A.1/12 of the mass of a carbon-12 atom
  2. B.Mass of one hydrogen atom
  3. C.Mass of one neutron
  4. D.1/16 of the mass of an oxygen atom
11
The relative atomic mass of an element is generally calculated with respect to:
  1. A.Hydrogen-1
  2. B.Oxygen-16
  3. C.Carbon-12
  4. D.Nitrogen-14
12
One mole of any substance contains approximately:
  1. A.3.011 × 10²³ particles
  2. B.1.204 × 10²⁴ particles
  3. C.9.8 × 10²³ particles
  4. D.6.022 × 10²³ particles
13
Avogadro constant has the approximate value:
  1. A.1.602 × 10⁻¹⁹ mol⁻¹
  2. B.6.022 × 10²³ mol⁻¹
  3. C.9.109 × 10⁻³¹ mol⁻¹
  4. D.3.00 × 10⁸ mol⁻¹
14
The molar mass of molecular oxygen, O₂, is approximately:
  1. A.16 g mol⁻¹
  2. B.18 g mol⁻¹
  3. C.32 g mol⁻¹
  4. D.64 g mol⁻¹
15
The number of moles present in 18 g of water is:
  1. A.0.5 mol
  2. B.1 mol
  3. C.2 mol
  4. D.18 mol
16
How many moles are present in 44 g of CO₂?
  1. A.0.5 mol
  2. B.4 mol
  3. C.2 mol
  4. D.1 mol
17
The mass of one mole of sodium atoms is approximately:
  1. A.11 g
  2. B.35.5 g
  3. C.23 g
  4. D.46 g
18
Which quantity represents the mass of one mole of a substance?
  1. A.Atomic number
  2. B.Molar mass
  3. C.Molecular number
  4. D.Mass number
19
The molecular mass of H₂SO₄ is approximately:
  1. A.49 u
  2. B.80 u
  3. C.98 u
  4. D.100 u
20
The formula mass of sodium chloride is approximately:
  1. A.23 u
  2. B.35.5 u
  3. C.46 u
  4. D.58.5 u
21
The empirical formula represents:
  1. A.Actual number of atoms in a molecule
  2. B.Total molecular mass
  3. C.Simplest whole-number ratio of atoms
  4. D.Arrangement of atoms in space
22
The empirical formula of hydrogen peroxide, H₂O₂, is:
  1. A.H₂O₂
  2. B.H₂O
  3. C.HO
  4. D.HO₂
23
The empirical formula of glucose, C₆H₁₂O₆, is:
  1. A.CH₂O
  2. B.CHO
  3. C.C₂H₄O₂
  4. D.C₆H₁₂O₆
24
If the empirical formula mass is 30 and the molecular mass is 60, the molecular formula contains empirical units equal to:
  1. A.1
  2. B.3
  3. C.2
  4. D.4
25
Percentage composition of an element in a compound depends primarily on:
  1. A.Atomic number only
  2. B.Number of neutrons only
  3. C.Mass contributed by the element and molar mass of compound
  4. D.Physical state of compound
26
In H₂O, the approximate percentage by mass of oxygen is:
  1. A.11.1%
  2. B.88.9%
  3. C.50%
  4. D.94.1%
27
Which law is illustrated when carbon forms CO and CO₂ with different masses of oxygen for a fixed mass of carbon?
  1. A.Conservation of mass
  2. B.Reciprocal proportions
  3. C.Multiple proportions
  4. D.Conservation of energy
28
A balanced chemical equation obeys the law of:
  1. A.Conservation of mass
  2. B.Constant volume
  3. C.Partial pressures
  4. D.Constant temperature
29
In a balanced chemical equation, stoichiometric coefficients indicate:
  1. A.Relative numbers of moles
  2. B.Atomic masses
  3. C.Activation energies
  4. D.Atomic numbers
30
In the reaction 2H₂ + O₂ → 2H₂O, the mole ratio H₂:O₂ is:
  1. A.1:1
  2. B.1:2
  3. C.2:1
  4. D.2:3
31
For the reaction N₂ + 3H₂ → 2NH₃, one mole of N₂ requires:
  1. A.1 mol H₂
  2. B.2 mol H₂
  3. C.6 mol H₂
  4. D.3 mol H₂
32
The reactant that is completely consumed first in a chemical reaction is called the:
  1. A.Excess reagent
  2. B.Intermediate
  3. C.Catalyst
  4. D.Limiting reagent
33
The amount of product predicted from stoichiometric calculations is known as:
  1. A.Percentage yield
  2. B.Actual yield
  3. C.Theoretical yield
  4. D.Relative yield
34
Percentage yield is calculated from:
  1. A.Theoretical yield/actual yield × 100
  2. B.Molar mass/atomic mass × 100
  3. C.Reactant mass/product mass × 100
  4. D.Actual yield/theoretical yield × 100
35
Which quantity is conserved in an ordinary chemical reaction?
  1. A.Number of molecules
  2. B.Number of moles
  3. C.Volume
  4. D.Total mass
36
Four grams of hydrogen react completely with oxygen according to 2H₂ + O₂ → 2H₂O. The amount of H₂ is:
  1. A.1 mol
  2. B.8 mol
  3. C.4 mol
  4. D.2 mol
37
The number of molecules in 0.5 mol of O₂ is approximately:
  1. A.3.011 × 10²³
  2. B.1.505 × 10²³
  3. C.6.022 × 10²³
  4. D.12.044 × 10²³
38
Which statement about a molecule is correct?
  1. A.It must contain different elements
  2. B.It is an electrically neutral group of atoms capable of independent existence
  3. C.It is always positively charged
  4. D.It cannot contain identical atoms
39
The simplest representative particle of an ionic compound such as NaCl is called a:
  1. A.Molecule
  2. B.Formula unit
  3. C.Radical
  4. D.Proton
40
Stoichiometry primarily deals with:
  1. A.Shapes of atomic orbitals
  2. B.Quantitative relationships in chemical reactions
  3. C.Radioactive decay
  4. D.Chemical nomenclature