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