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- Question
Leakage in LP gas cylinders is easily detected by adding
Options- A. mercaptans
- B. propylene
- C. carbon disulphide
- D. phosgene
- Correct Answer
- mercaptans
Explanationmercaptans (or thioalcohols) have a foul odour
- 1. Which of the following is called 'the King of Chemicals' ?
Options- A. Nitric acid
- B. Hydrochloric acid
- C. Silver nitrate
- D. Sulphuric acid Discuss
- 2. Standard Electrode potential is measured in terms of
Options- A. Pyrometer
- B. Electrometer
- C. Thermometer
- D. Voltmeter Discuss
- 3. 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
- 4. 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 Discuss
- 5. Which of the following gases is heavier than oxygen?
Options- A. Carbon dioxide
- B. Ammonia
- C. Methane
- D. Helium Discuss
- 6. 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
- 7. Artificial radioactivity elements are present in
Options- A. s - block
- B. p - block
- C. d - block
- D. f - block Discuss
- 8. The atoms of the elements which have same number of neutrons are called
Options- A. Isobars
- B. Isotopes
- C. Isotones
- D. None Discuss
- 9. The atoms of the elements having same atomic number but different mass number are called
Options- A. Isobar
- B. Isotopes
- C. Iso electronic
- D. Isotones Discuss
- 10. Ozone is concentrated in the
Options- A. Stratosphere
- B. Troposphere
- C. Ionosphere
- D. Mesosphere Discuss
Chemistry problems
Search Results
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: Voltmeter
Explanation:
Voltmeter is used to measure Standard Electrode Potential
Correct Answer: ionic bond
Correct Answer: It is a monomer of cisisoprene
Correct Answer: Carbon dioxide
Correct Answer: Ionic bond
Correct Answer: f - block
Correct Answer: Isotones
Correct Answer: Isotopes
Correct Answer: Stratosphere
Explanation:
Most of the ozone in the atmosphere is found in the layer of stratosphere, which begins about 10.16 kilometers (6.10 miles) above Earth's surface and extends up to about 50 kilometers (31 miles) altitude.
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