Cock, coal, charcoal, bone charcoal, etc. are non-crystalline allotropes of carbon. These are commonly called amorphous carbon.

Correct option is D) Ostrich

Correct option is A) 12.01

Correct option is D) chemical

Zveomatic bone is commonly known as Cheek bone.

1. False. Saggital suture joins two parietal bones. 2. False. In human beings, there are 12 pairs of ribs. 3. True

The correct answer is (B) Scapula

Correct answer: (D) All of these

Crystalline common salt is the odd one out, as it does not contain water of crystallisation. It is an ionic compound and ionic compounds are crystalline in nature and rest all...

all of the above

`N_2` is less reactive at room temperature due to presence of triple bond between two N atoms `NcongN` Hence bond Dissociation energy `N_2` is bery high.