Chemistry Quiz 2
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Question 1 |
The compound used as 'artificial sweetener' is
A | Saccharine |
B | Tartaric acid |
C | citric acid |
D | octane |
Question 2 |
The chemical name of 'Marsh gas' is
A | Ethene |
B | Methane |
C | Propane |
D | Hexane |
Question 3 |
Wooden pencil used for writing contains
A | Graphite |
B | Lead |
C | Salt |
D | Cane sugar |
Question 4 |
Valency of Cr in CrPO4 is
A | 4 |
B | 3 |
C | 2 |
D | 1 |
Question 5 |
What mass of hydrogen and oxygen will be produced on complete electrolysis of 18g of water?
A | 2g hydrogen and 32g oxygen |
B | 2g hydrogen and 16g oxygen |
C | 4g hydrogen and 32g oxygen |
D | 4g hydrogen and 14g oxygen |
Question 6 |
Which one among the following statements about an atom is not correct
A | Atoms always combine to form molecules |
B | Atoms are the basic units from which molecules and
ions are formed |
C | Atoms are always neutral in nature |
D | Atoms aggregate in large numbers to form the matter
that we can see, feel and touch |
Question 7 |
The nucleus of a singly ionized carbon atom contains
A | 6 protons and 6 neutrons |
B | 5 protons and 6 neutrons |
C | 6 protons, 6 neutrons and 6 electrons |
D | 12 protons, 6 neutrons and 6 electrons |
Question 8 |
On the basis of following features identify correct option
- Gaps were left for undiscovered elements
- No correct position of hydrogen
- The isotopes of same element will be given different position
A | Mendeleev's periodic table |
B | Modern periodic table |
C | Newland's arrangement of elements |
D | Both (a) and (b) |
Question 9 |
According to Newland’s law of octaves, which element is the repetition of the first element in the periodic table?
A | Oxygen |
B | Nitrogen |
C | Chlorine |
D | Sulphur |
Question 10 |
Which one of the following is a diagonally related pair?
A | H, Be |
B | Na, Mg |
C | B, Si |
D | K, Ca |
Question 11 |
Which one of the following salts when dissolved in water makes the solution basic?
A | Sodium chloride |
B | Copper sulphate |
C | Ferric chloride |
D | Sodium acetate |
Question 12 |
Which of the following salts are insoluble in water ?
A | Chlorides of Fe and Mn |
B | Nitrates of Ag and Pb |
C | Carbonates of Pb and Cu |
D | Phosphates of Na and NH4 |
Question 13 |
Two elements gallium and oxygen combine to form a compound Ga2O3. Which among the following is the valency of gallium ?
A | 1 |
B | 2 |
C | 3 |
D | 4 |
Question 14 |
Which are the most abundant elements in the universe ?
A | Oxygen and Nitrogen |
B | Hydrogen and Oxygen |
C | Hydrogen and Helium |
D | Carbon and Nitrogen |
Question 15 |
What is the colour of oxygen in solid state ?
A | Pale yellow |
B | Pale blue |
C | Light green |
D | Greenish yellow |
Question 16 |
Why is nitrogen molecule chemically less active
A | It has small atomic radius |
B | It has high electronegativity |
C | It has high dissociation energy |
D | It has stable electronic configuration |
Question 17 |
Identify the enzyme which converts glucose to ethyl alcohol.
A | Zymase |
B | Invertase |
C | Maltase |
D | Diastase |
Question 18 |
Mineral acids are stronger acids than carboxylic acids because
A. mineral acids are completely ionised
B. carboxylic acids are completely ionised
C. mineral acids are partially ionised
D. carboxylic acids are partially ionised
A | A and D |
B | B and C |
C | A and B |
D | C and D |
Question 19 |
Drinking alcohol’ is very harmful and it ruins the health.‘Drinking alcohol’ stands for:
A | drinking methyl alcohol |
B | drinking ethyl alcohol |
C | drinking propyl alcohol |
D | drinking isopropyl alcohol |
Question 20 |
Which fertilizer is assimilated directly by the plant?
A | Super phosphate |
B | Nitrolim |
C | Muriate of Potash |
D | Humus |
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