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Given the QUESTION, identify the ANSWER
1. Lemon juice is
• Acidic
• Basic
• Neutral
• Metallic
Resposta: Acidic
2. A pH of below 7 indicates
• Alkalinity
• Acidity
• Presence of Ions
• Purity of the sample
Resposta: Acidity
3. Fill in the missing word
Acid + _______ = Salt + Water
• Metal
• Non Metal
• Oxygen
• Base
Resposta: Base
4. Acids change a litmus paper from
• Red to Blue
• Green to White
• Red to Purple
• Blue to Red
Resposta: Blue to Red
5. Fizziness in Coco-Cola/Pepsi is caused by
• Helium
• Carbon Dioxide
• Hydrogen
• Nitrogen
Resposta: Carbon Dioxide
6. A substance which speeds up a chemical reaction without itself getting affected is known as a
• Counter Ion
• Nucleus
• Catalyst
• Cation
Resposta: Catalyst
7. Which of the following gases is green in color?
• Krypton
• Neon
• Hydrogen
• Chlorine
Resposta: Chlorine
8. Heat is liberated in
• Endothermic Reactions
• Exothermic Reactions
• Substitution Reactions
• All chemical reactions
Resposta: Exothermic Reactions
9. The lead of a pencil mainly contains
• Graphite
• Lead
• Carbon Black
• Plastics
Resposta: Graphite
10. What gas is evolved when dilute sulphuric acid is added to Zinc?
• Sulphur Dioxide
• Hydrogen
• Argon
• Hydrogen Peroxide
Resposta: Hydrogen
11. A substance that absorbs moisture is known as
• Hydrophilic
• Hydrophobic
• Amorphous
• Hygroscopic
Resposta: Hygroscopic
12. Which of the following is not an acid?
• HCl
• NaOH
• H2SO4
• HNO3
Resposta: NaOH
13. What is the combination of any substance with oxygen known as?
• Reduction
• Combustion
• Hydrogenation
• Oxidation
Resposta: Oxidation
14. Which of the following is not a physical change?
• Decantation
• Distillation
• Precipitation
• Oxidation
Resposta: Oxidation
15. The two allotropes of phosphorus are
• Rhombic Phosphorus, Monoclinic Phosphorus
• Red Phosphorus, Yellow Phosphorus
• Alpha Phosphorus, Beta Phosphorus
• Crystalline Phosphorus, Amorphous Phosphorus
Resposta: Red Phosphorus, Yellow Phosphorus
16. Which of the following is a chemical change?
• Boiling of water
• Freezing of water
• Dissolving of salt in water
• Rusting of iron
Resposta: 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
Resposta: A Saturated Solution
18. Which of the following is not an allotrope of carbon
• Charcoal
• Silk
• Diamond
• Graphite
Resposta: Silk
19. Solubility of a substance in a solvent usually increases with an increase in temperature.
• True
• False
Resposta: True
20. Catalysts often speed up certain chemical reactions.
• False
• True
Resposta: True
Resolva o Quiz : Science Quiz : General Chemistry
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