fuel, food preservation, nutrition, medicine, detergents and fertilizers - Category wise Question and Answer Practice Test with Solutions

Question : 16 [UPPCS (Pre) 2005]

CNG used in automobiles to check pollution mainly consists of

a) N₂

b) CH₄

c) CO₃

d) H₂

Question : 17 [BPSC (Pre) 1997]

The Pressure gauge is not given in the domestic LPG cylinders because

a) Their use is not safe

b) They are so costly

c) They cannot represent the quantity of gas in LPG cylinders

d) They are choked by LPGs

Question : 18 [IAS (Pre) 2003]

Consider the following statements. Sodium silicate and sodium sulphate are mixed as detergents in washing powders so that

1. To maintain dryness of the powder.
2. To maintain the basicity of powder.

a) Only 2

b) Both 1 and 2

c) Only 1

d) None of these

Question : 19 [UPPCS (Pre) 1996]

Tetraethyl Lead (TEL) is added to petrol

a) To increase its anti-knocking rating

b) To prevent it from freezing

c) To increase its flash points

d) To increase its boiling point

Question : 20 [PSC (Pre) 2019]

Which one of the following is used in the manufacture of soaps?

a) Mobil oil

b) Kerosene oil

c) Vegetable oil

d) Cutting oil