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

Question : 21 [UP (Pre) 2009]

The percentage of nitrogen in urea is

a) 47%

b) 30%

c) 25%

d) 60%

Question : 22 [UPPCS (Pre) 2010]

Which one of the following compounds is used as a sedative?

a) Calcium Chloride

b) Ethyl Alcohol

c) Potassium Bromide

d) Phosphorus Trichloride

Question : 23 [PSC (Pre) 2019]

‘Humus’ is an example of

a) Organic colloids

b) Soil structure

c) Crystalloids

d) None of the above

Question : 24 [UPPCS (Pre) 1994]

The fuel used in a diesel engine

a) Mixture of diesel and petrol

b) Vapour of diesel and air

c) Diesel only

d) Mixture of diesel, air and petrol

Question : 25 [PSC (Pre) 2017]

Match List-I with List-II and select the correct answer using the codes given below the lists:

a) 3 2 4 1

b) 2 1 3 4

c) 2 4 3 1

d) 3 2 1 4