Diamond is an allotropic form of

1. Diamond is an allotropic form of 

A. Carbon

B. Hydrogen
C. Nitrogen
D. Silicon

2. The SI unit of Heat is 

A. Watt
B. Volt

C. Joule

D. Newton

3. The good sources of Vitamin-A are 

A. green leafy vegetables

B. seeds
C. fresh vegetables and fruits
D. sea foods