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Given the QUESTION, identify the ANSWER
1. Lemon juice is Acidic Basic
Neutral
Metallic
Answer: Acidic 2. A pH of below 7 indicates Acidity Alkalinity
Presence of Ions
Purity of the sample
Answer: Acidity 3. Fill in the missing word Acid + _______ = Salt + Water Metal
Non Metal
Base Oxygen
Answer: Base
4. Acids change a litmus paper from Red to Blue
Green to White
Red to Purple
Blue to Red
Answer: Blue to Red 5. Fizziness in Coco-Cola/Pepsi is caused by Helium
Hydrogen
Carbon Dioxide Nitrogen
Answer: Carbon Dioxide 6. A substance which speeds up a chemical reaction without itself getting affected is known as a Catalyst Counter Ion
Nucleus
Cation
Answer: Catalyst 7. Which of the following gases is green in color? Krypton
Chlorine Neon
Hydrogen
Answer: Chlorine 8. Heat is liberated in Exothermic Reactions Endothermic Reactions
Substitution Reactions
All chemical reactions
Answer: Exothermic Reactions 9. The lead of a pencil mainly contains Lead
Carbon Black
Plastics
Graphite
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
Hydrophobic
Hygroscopic Amorphous
Answer: Hygroscopic 12. Which of the following is not an acid? HCl
NaOH H2SO4
HNO3
Answer: NaOH 13. What is the combination of any substance with oxygen known as? Reduction
Combustion
Hydrogenation
Oxidation
Answer: Oxidation 14. Which of the following is not a physical change? Decantation
Distillation
Precipitation
Oxidation
Answer: Oxidation 15. The two allotropes of phosphorus are Rhombic Phosphorus, Monoclinic Phosphorus
Red Phosphorus, Yellow Phosphorus Alpha Phosphorus, Beta Phosphorus
Crystalline Phosphorus, Amorphous Phosphorus
Answer: 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
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. False
True
Answer: True
Try the Quiz : Science Quiz : General Chemistry
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