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Given the QUESTION, identify the ANSWER
1. Lemon juice is
• Basic
• Neutral
• Metallic
• Acidic
Answer: Acidic
2. A pH of below 7 indicates
• Alkalinity
• Presence of Ions
• Purity of the sample
• Acidity
Answer: Acidity
3. Fill in the missing word
Acid + _______ = Salt + Water
• Base
• Metal
• Non Metal
• Oxygen
Answer: Base
4. Acids change a litmus paper from
• Blue to Red
• Red to Blue
• Green to White
• Red to Purple
Answer: Blue to Red
5. Fizziness in Coco-Cola/Pepsi is caused by
• Carbon Dioxide
• Helium
• Hydrogen
• Nitrogen
Answer: Carbon Dioxide
6. A substance which speeds up a chemical reaction without itself getting affected is known as a
• Counter Ion
• Nucleus
• Catalyst
• Cation
Answer: Catalyst
7. Which of the following gases is green in color?
• Krypton
• Neon
• Chlorine
• Hydrogen
Answer: Chlorine
8. Heat is liberated in
• Endothermic Reactions
• Exothermic Reactions
• Substitution Reactions
• All chemical reactions
Answer: Exothermic Reactions
9. The lead of a pencil mainly contains
• Lead
• Graphite
• Carbon Black
• Plastics
Answer: Graphite
10. What gas is evolved when dilute sulphuric acid is added to Zinc?
• Sulphur Dioxide
• Hydrogen
• Argon
• Hydrogen Peroxide
Answer: Hydrogen
11. A substance that absorbs moisture is known as
• Hydrophilic
• Hygroscopic
• Hydrophobic
• Amorphous
Answer: Hygroscopic
12. Which of the following is not an acid?
• HCl
• H2SO4
• HNO3
• NaOH
Answer: NaOH
13. What is the combination of any substance with oxygen known as?
• Oxidation
• Reduction
• Combustion
• Hydrogenation
Answer: Oxidation
14. Which of the following is not a physical change?
• Oxidation
• Decantation
• Distillation
• Precipitation
Answer: Oxidation
15. The two allotropes of phosphorus are
• Red Phosphorus, Yellow Phosphorus
• Rhombic Phosphorus, Monoclinic Phosphorus
• Alpha Phosphorus, Beta Phosphorus
• Crystalline Phosphorus, Amorphous Phosphorus
Answer: Red Phosphorus, Yellow Phosphorus
16. Which of the following is a chemical change?
• Rusting of iron
• Boiling of water
• Freezing of water
• Dissolving of salt in water
Answer: Rusting of iron
17. If no more solute can be dissolved in a solvent at a given temperature then that solution is called
• An Unstable Solution
• A Real Solution
• A Saturated Solution
• A Dispersed Solution
Answer: A Saturated Solution
18. Which of the following is not an allotrope of carbon
• Charcoal
• Diamond
• Graphite
• Silk
Answer: Silk
19. Solubility of a substance in a solvent usually increases with an increase in temperature.
• True
• False
Answer: True
20. Catalysts often speed up certain chemical reactions.
• True
• False
Answer: True
Try the Quiz : Science Quiz : General Chemistry
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