List of top Questions asked in AIPMT

Mast cells of connective tissue contain

Which of the following will not form a yellow precipitate on heating with an alkaline solution of iodine?

Which one of the following statements about the zeolites is false ?

Ionic radii are

In semiconductors at a room temperature

In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order:

In the genetic code dictionary, how many codons are used to code for all the 20 essential amino acids ?

Which of the following statement is not true ?

The reaction quotient $( Q )$ for the reaction: $N _{2}( g )+3 H _{2}( g ) \rightleftharpoons 2 NH _{3}( g )$ is given by $Q =\frac{\left[ NH _{3}\right]^{2}}{\left[ N _{2}\right]\left[ H _{2}\right]^{3}} .$ The reaction will proceed from right to left if :

Reverse bias applied to a junction diode

Which of the following pair of compounds are enantiomers ?

Which one of the following is a free- radical substitution reaction

What would happen if in a gene encoding apolypeptide of $50$ amino acids has UAC at $25^{th}$ position mutated to UAA ?

Fluoride pollution mainly affects

Acrilan is a hard, horny and a high melting material. Which of the following represents its structure ?

Systemic heart refers to

Manipulation of DNA in genetic engineering became possible due to the discovery of :-

In fluid mosaic model of plasma membrane

There is no life on moon due to the absence of -

Ribosomes are produced in :-

Melanin protects from

Which of the following is absent in polluted water:-

Zn gives $H_2$ gas with $H_2SO_4$ and HCI but not with $HNO_3$ because :-

Vessels are found in :-

Jacob and Monad studied lactose metabolism in E. coli and proposed operon concept. Operon concept is applicable for:-