set 4 MCQ Questions & Answers Detailed Explanation

Question : 1

Baking powder is

a) a compound

b) an element

c) a mixture

d) a salt

Question : 2

Which of the following is known as dead burnt plaster?

a) Slaked lime

b) Lime stone

c) Quick lime

d) Gypsum

Question : 3

The acid used in making of vinegar is –

a) acetic acid

b) sulphuric acid

c) formic acid

d) nitric acid

Question : 4

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

a) 4 3 2 1

b) 3 4 1 2

c) 3 4 2 1

d) 4 3 1 2

Question : 5

‘Yellow cake’, an item of smuggling across border is

a) uranium oxide

b) a crude form of heroin

c) a crude form of cocaine

d) unrefined gold

Question : 6

Which one of the following materials is very hard and very ductile?

a) Cast iron

b) Carborundum

c) Tungsten

d) Nichrome