MISCELLANEOUS AND USEFUL CHEMICAL COMPOUNDS (Part-IV)

Total Questions: 50

11. Which of the following gases reduces the Oxygen carrying capacity of the blood? [S.S.C. Online Graduate Level (T-I) 7.06.2019 (Shift-I)]

Correct Answer: (b) Carbon Monoxide
Note:

Carbon monoxide reduces the oxygen-carrying capacity of the blood, as this gas combines with hemoglobin (Hb) present in the blood to form carboxyhemoglobin (COHb). It is a permanent compound, due to which the transport of oxygen by hemoglobin in the blood is inhibited.

12. Which is known as carbolic acid? [S.S.C. Online Graduate Level (T-I) 10.09.2016 (Shift-I)]

Correct Answer: (a) Phenol
Note:

Carbolic acid is the common name for phenol (C₆Hβ‚…OH). Plastic materials are produced with the help of carbolic acid. With its help, dyes, disinfectants, and antiseptics are also made.

13. What is the formula of butane gas? [S.S.C. Online CHSL (T-I) 19.03.2020 (Shift-I)]

Correct Answer: (c) Cβ‚„H₁₀
Note:

Butane is one of the saturated hydrocarbons of the alkane series (Cβ‚™Hβ‚‚β‚™β‚Šβ‚‚). Its chemical formula is Cβ‚„H₁₀. The first member of this category is methane (CHβ‚„).

14. Ethane gas has a slightly ______ taste. [S.S.C. Online CHSL (T-I) 18.01.2017 (Shift-I)]

Correct Answer: (a) sweet
Note:

Ethane is an organic chemical compound. Its chemical formula is Cβ‚‚H₆. Ethane has a slightly sweet taste. It is also known as a hydrocarbon.

15. Liquefied Petroleum Gas (LPG) used for cooking in homes is a combination of: [S.S.C. Online MTS (T-I) 18.10.2021 (Shift-I)]

Correct Answer: (b) propane and butane
Note:

Liquefied petroleum gas (LPG) used for cooking in homes is a mixture of organic gases mainly propane and butane. The full name of LPG is Liquefied Petroleum Gas (LPG). To detect the leakage of LPG, some odorous substance like mercaptan, etc., is added to it.

16. LPG is a mixture of: [S.S.C. Online CHSL (T-I) 20.01.2017 (Shift-III)]

Correct Answer: (b) Butane and Propane
Note:

Liquefied petroleum gas (LPG) used for cooking in homes is a mixture of organic gases mainly propane and butane. The full name of LPG is Liquefied Petroleum Gas (LPG). To detect the leakage of LPG, some odorous substance like mercaptan, etc., is added to it.

17. Methyl Propane is an isomer of: [S.S.C. Online Graduate Level (T-I) 4.06.2019 (Shift-I)]

Correct Answer: (d) n-Butane
Note:

Methyl propane is an isomer of n-butane. Its general chemical formula is Cβ‚„H₁₀, and the structural formula is written as CH(CH₃)₃, or HC(CH₃)₃.

18. Benzene is ______ in Ethyl Alcohol. [S.S.C. Online CHSL (T-I) 25.01.2017 (Shift-II)]

Correct Answer: (c) Insoluble
Note:

Benzene is insoluble in ethyl alcohol. Ethyl alcohol is a polar compound, whereas benzene is a completely non-polar organic compound. Hence it cannot dissolve in ethyl alcohol.

19. What is the main component of natural gas? [C.P.O. S.I. 5.06.2016 (Shift-I)]

Correct Answer: (a) Methane
Note:

The main component of natural gas is methane (CHβ‚„). It is a flammable organic gas. Due to being flammable, it is used as a fuel.

20. Which one of the following is the primary component of natural gas? [S.S.C. Online MTS (T-I) 18.10.2021 (Shift-III)]

Correct Answer: (c) Methane
Note:

The main component of natural gas is methane (CHβ‚„). It is a flammable organic gas. Due to being flammable, it is used as a fuel.