7000+ Science and Technology Questions for UPSC Mains, Prelims Pdf - 2

Question: 6

When an iron nail gets rusted, iron oxide is formed

(A) Without any change in colour or weight of the nail

(B) With decrease in the weight of the nail

(C) With increase in the weight of the nail

(D) Without any change in the weight of the nail

Question: 7

Which of the following plants bears non-endospermic seed?

(A) Groundnut

(B) Mustard

(C) Pea

(D) Coconut

Question: 8

Which of the following is not a cereal?

(A) Maize

(B) Barley

(C) Rice

(D) Musary

Question: 9

Turpentine oil is obtained from

(A) Animal fat

(B) Pine tree

(C) Mineral oil

(D) Eucalyptus tree

Question: 10

Which of the following metals can display hydrogen from dilute acids?

(A) Silver

(B) Gold

(C) Copper

(D) Zinc