Kerala PSC Chemistry Questions Part 1
- Which of the following is the poorest conductor of heat in comparison to other options?
- Silver
- Copper
- Lead
- Mercury
Correct Answer: Lead
2. Which among the following is the correct set of chemical formulae of Chile Saltpetre, Saltpetre and Quick Lime?
- KNO3, NaNO3, CaO
- NaNO3, KNO3, Ca(OH)2
- Na(OH)2, KOH, CaO
- NaNO3, KNO3, CaO
Correct Answer: NaNO3, KNO3, CaO
3. Dalton’s name is associated with which of the following terms?
- Electron
- Proton
- Atom
- Neutron
Correct Answer: Atom
4. Which among the following methods can be used to remove the permanent hardness in water due to calcium or magnesium sulphates?
- Sulphonate method
- Nitrate method
- Zeolite method
- None of these
Correct Answer: Zeolite method
5. Which among the following is called Laughing Gas popularly?
- Nitric oxide
- Nitrous oxide
- Nitrogen penta oxide
- Nitrogen
Correct Answer: Nitrous oxide
6. Which among the following happens in an oxidation reaction?
- Electrons are gained
- Electrons are lost
- Protons are gained
- Protons are lost
Correct Answer: Electrons are lost
7. Which among the following is the correct decreasing of bio elements in Human Body?
- oxygen, hydrogen, Carbon, nitrogen, calcium, and phosphorus
- oxygen, carbon, nitrogen, hydrogen, calcium, and phosphorus
- oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus
- carbon, oxygen, hydrogen, nitrogen, calcium, and phosphorus
Correct Answer: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus
8. Which is sold as a weed killer of the broad-leaved weeds is a synthetic version of __:
- Auxin Hormone
- Cytokinin Hormone
- Gibberellin
- None of them
Correct Answer: Auxin Hormone
9. Tell the composition of soap?
- Sodium salt with fatty acids.
- Potassium salt with fatty acids
- Both a & b
- Sodium and Potassium salt mixed with chemicals
Correct Answer: Both- Sodium salt with fatty acids & Potassium salt with fatty acids
10. Detergent is defined as…..
- A liquid surfactant
- A liquid soluble
- A liquid sovent
- A liquid solution
Correct Answer: A liquid surfactant