List of practice Questions

______ is the branch of genetics, which deals with heritable changes in gene activity that are not caused by changes in the DNA sequence.

Tetrad analysis confirmed the occurrence of crossing over during tetrad stage. This was first reported in_____.

Which one of the following is a decomposer?

__________ is the result of an artificial hybridization between radish and cabbage.

Saliva contains the enzyme _________. That digests carbohydrates (starches).

Select the correctly written scientific name of Mango which was first described by Carolus Linnaeus

The percentage of forest cover recommended by the 'National Forest Policy' (1988) is:

______ is made by vitamin K, which is a fat-soluble vitamin absorbed by the small intestine.

The figure shows the skull of which Homo erectus?

Embryo of flowering plant is always:

A person with $AB$ blood group:

OROS is a technology developed for/as:

Which of the following is an endogenous dormancy?

After fertilization the ovule develops into:

Which of the following hepatitis-causing virus contains DNA as nucleic acid?

Drug called 'Heroin' is synthesized by:

During the initial infection of HIV, a person experiences a brief period of:

First organic compound to be synthesised was_______.

A high molecular weight compound formed by combining large numbers of small molecules of low molecular weight is called:

A catalyst is added to a reaction to increase the rate of reaction. Which of the following statements is correct?

Plastic used to preserve yogurts is replaced with a polymer called polylactic acid is an example of ____________.

The number of electrons, protons and neutrons in a species are equal to $18$, $16$ and $16$ respectively. Assign the proper symbol to the species.

Which of the following compounds give(s) positive test with Tollens' reagent?A. Carboxylic acidB. AlcoholC. Alpha hydroxy ketonesD. Aldehydes

Heavy water is _________. 

$12g$ of urea is present in 1 litre of solution and $68.4g$ of sucrose is separately dissolved in 1 litre of another sample of solution. The lowering of vapour pressure of first solution is: