General Knowledge - General Science

Exercise :: General Science - Elements and Metals

41. 

What is laughing gas?

A. Nitrous Oxide
B. Carbon monoxide
C. Sulphur dioxide
D. Hydrogen peroxide

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

42. 

Actinides are the elements with atomic numbers from

A. 97 to 104
B. 101 to 115
C. 89 to 103
D. 36 from 43

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

43. 

The two elements that are frequently used for making transistors are

A. boron and aluminium
B. silicon and germanium
C. iridium and tungsten
D. niobium and columbium

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

44. 

The filament of an electric bulb is made of

A. tungsten
B. nichrome
C. graphite
D. iron

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

45. 

Diamond is an allotropic form of

A. germanium
B. carbon
C. silicon
D. sulphur

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.