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- Question
Which among the following is false about natural rubber?
Options- A. It is an elastomer
- B. It is a monomer of cisisoprene
- C. Natural rubber is a polymer of chloroprene
- D. It is heated with sulphur compounds to improve its properties
- Correct Answer
- It is a monomer of cisisoprene
- 1. Which of the following gases is heavier than oxygen?
Options- A. Carbon dioxide
- B. Ammonia
- C. Methane
- D. Helium Discuss
- 2. Which of the following is also known as Carbolic Acid?
Options- A. Phenol
- B. Hydroxide
- C. Sulphuric Acid
- D. Ethanol Discuss
- 3. Tertiary sewage treatment is designed to remove
Options- A. Calcium and Phosphorous
- B. Nitrogen and Calcium
- C. Phosphorous and Nitrogen
- D. Calcium and Nitrogen Discuss
- 4. A feature of catabolic reactions is that they
Options- A. occur only in mitochondria
- B. occur only during loss of body weight
- C. involve release of energy
- D. involve consumption of energy Discuss
- 5. Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing at ?6°C will be: (Kf for water = 1.86 Kg/mol and molar mass of ethylene glycol = 62 kg/mol)
Options- A. 204.60 g
- B. 304.30 g
- C. 804.32 g
- D. 400.00 g Discuss
- 6. A bond formed by the transfer of electrons betwwen atoms of the elements is called
Options- A. ionic bond
- B. covalent bond
- C. co ordinate bond
- D. none Discuss
- 7. Standard Electrode potential is measured in terms of
Options- A. Pyrometer
- B. Electrometer
- C. Thermometer
- D. Voltmeter Discuss
- 8. Which of the following is called 'the King of Chemicals' ?
Options- A. Nitric acid
- B. Hydrochloric acid
- C. Silver nitrate
- D. Sulphuric acid Discuss
- 9. Leakage in LP gas cylinders is easily detected by adding
Options- A. mercaptans
- B. propylene
- C. carbon disulphide
- D. phosgene Discuss
- 10. A bond formed by the transfer of electrons between atoms of the elements is called
Options- A. Ionic bond
- B. Covalent bond
- C. Co-ordinate bond
- D. Hydrogen bond Discuss
Chemistry problems
Search Results
Correct Answer: Carbon dioxide
Correct Answer: Phenol
Correct Answer: Phosphorous and Nitrogen
Correct Answer: involve release of energy
Correct Answer: 804.32 g
Explanation:
for ethylene glycol in aq. solution
=> w = 800 g
So, the weight of solute should be more than 800 g.
Correct Answer: ionic bond
Correct Answer: Voltmeter
Explanation:
Voltmeter is used to measure Standard Electrode Potential
Correct Answer: Sulphuric acid
Explanation:
Sulphuric acid is called the King of Chemicals because it is used in the preparation of a very large number of other useful chemicals such as hydrochloric acid, nitric acid, dyes, drugs etc. In fact the annual production of shulpuric acid in a country is a measure of the economy of the country.
Correct Answer: mercaptans
Explanation:
mercaptans (or thioalcohols) have a foul odour
Correct Answer: Ionic bond
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