Toxin of Bacillus thuringiensis is activated in insect by:

The enzyme used to treat a plant cell for isolation of DNA is:

Which of the following are the parts of mammary glands?
(A) Lactiferous duct
(B) Ampulla
(C) Areola
(D) Acrosome
Choose the correct answer from the options given below :

The sequencing of fragments using automated DNA sequencers in HGP, worked on the principle of the method that was developed by:

World Summit on 'Sustainable Development' in 2002 was held in :

Which one of the following is a result of convergent evolution?

Antibody molecule is made up of four peptide chain called as light and heavy chain are joined together by :

Answer the question on the basis of passage given below:
Second period elements of p-Block differs from the rest of their group members due to their small atomic size, high electronegativity, high ionization enthalpy and absence of d-orbitals. The elements from the second period like C, N, O have unique property of forming \(p \pi-p \pi\) multiple bonds whereas other heavier elements of p-block form \(d \pi-p \pi\) multiple bonds. This changes the properties of second period elements to great extent. Also the single bond strength of the p-block elements with their own atoms gets affected by their atomic size and presence of lone pairs.
Inert pair effect also affects the properties of the p-Block elements especially for those elements which are present from 4th period onward and this happens due to poor screening effect of inner (n-1)d subshell electrons.
Catenation tendency of Nitrogen is weaker than Phosphorus, because

Which one of the following represents a palindromic sequence?

A coil has a self inductance of 10 mH . The magnitude of the maximum induced emf in the coil when a current \(I=0.1 \sin 200 t\) A flows through it at a time \(t\) will be :

The angle between the planes whose equations are \(4 x+8 y+z=8\) and \(y+z=4\) is:

The function \(f(x)=2 x^3-3 x^2-12 x+4\) has:
(A) two points of local maxima.
(B) two points of local minima.
(C) one local maxima and one local minima.
(D) no local maxima or local minima.

The value of \(\tan ^{-1}\left(\tan \frac{3 \pi}{4}\right)+2 \cos ^{-1}\left(\cos \frac{7 \pi}{6}\right)\) is: