In the below reaction, the structure of "A" is:

1.		2.
3.		4.

 

Presence of plants arranged into well-defined vertical layers depending on their height can be seen best in:

1. Tropical Rain Forest

2. Grassland

3. Temperate Forest

4. Tropical Savannah

The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha-carbon is:

In which orbital is the pair of electrons located in the provided carbanion, CH₃C≡C^– ?

1. sp³
2. sp²
3. sp
4. 2p

Which of the following biphenyls is optically active?

1.		2.
3.		4.

Which of the following is not the product of dehydration of?

1.		2.
3.		4.

Golden rice is a genetically modified crop plant where the incorporated gene is meant for the biosynthesis of:

The species Ar, K⁺ and Ca²⁺ contain the same number of electrons. In which order do their radii increase?
1.  Ar < K⁺ < Ca²⁺
2. Ca²⁺ < Ar < K⁺
3. Ca²⁺ < K⁺ < Ar
4. K⁺ < Ar < Ca²⁺

In photosynthesis, the light-independent reactions take place at?

1. Thylakoid lumen

2. photosystem I

3. photosystem II

4. Stromal matrix