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

Question : 6 [UPPCS (Pre) 2002]

Which of these is not a colloid?

a) Blood

b) Ice cream

c) Milk

d) Honey

Question : 7 [PSC (Pre) 2017]

Consider the following statements.

1. Coal, petroleum and natural gas are fossil fuels.
2. Gasohol is mixture of benzene and alcohol.
3. Geothermal energy is nonconventional energy source.
4. Gobar gas contains mainly methane.

a) Only 1, 2 and 3 are correct

b) Only 1 and 2 are correct

c) Only 2 and 3 are correct

d) 1, 3 and 4 are correct

Question : 8 [IAS (Pre) 1997]

Which one of the following has the highest fuel value?

a) Natural gas

b) Hydrogen

c) Charcoal

d) Gasoline

Question : 9 [PCS (Mains) 2006]

Which of the following is consumed in the manufacture of urea fertilizer?

a) Chlorine

b) Carbon dioxide

c) Sulphur dioxide

d) Nitric acid

Question : 10 [RAS/RTS (Pre) 1999]

Milk is homogenized by

a) Removing its fat

b) Breaking down fat particles to the microscopic size with the help of centrifuge

c) Adding a little sodium carbonate

d) Boiling only