Which one of the following is most widely accepted method of contraception in India?

The historic convention on Biological Diversity held in Rio de Janeiro in 1992 is also called :

Read the passage carefully and give the answers to the question :
Does the number of species in a community really matter to the functioning of the ecosystem? This is a question for which ecologists have not been able to give a definitive answer. For many decades, ecologists believed that communities with more species, generally, tend to be more stable than those with less species. According to the International Union for Conservation of Nature and Natural Resources (IUCN) (2004), the total number of plant and animal species described so far is more than 1.5 million.
The following are the various hypotheses proposed in explaining the greatest biological diversity in tropics except :

Amniocentesis is legally used to determine---
(A) Sex of the foetus
(B) Presence of genetic disorders
(C) Massive child immunization.
(D) Survivability of the fetus
Choose the correct answer from the options given below:

Match List I with List II

LIST I	LIST II
A. Heroin	I. Atropa belladona
B. Marijuana	II. Erythroxylum coca
C. Cocaine	III. Cannabis sativa
D. Hallucinogenic properties	IV. Papaver somniferum

Choose the correct answer from the options given below:

Which of the following is NOT a means of transmission of Sexually Transmitted Infections (STIs)?

50,000 different strains of rice are example of:

A random variable \(X\) has the following probability distribution

x	-2	-1	0	1	2	3
p	0.1	k	0.2	2k	0.3	k

Then the mean of X is :

A catalyst increases the rate of reaction by:

Match List - I with List - II.

List - I	List - II
(A) Urease	(I) Maltose
(B) Maltase	(II) Glucose and fructose
(C) Invertase	(III) \(NH _3\) and \(CO _2\)
(D) Diastase	(IV) Glucose

Choose the correct answer from the options given below :

Arrange the following electromagnetic waves in decreasing order of their wavelength respectively.
A. Gamma Rays
B. UV Rays
C. Infrared Rays
D. X-Rays
E. Microwaves
Choose the correct answer from the options given below:

The complex \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4\left(\mathrm{NO}_2\right)_2\right] \mathrm{Cl}\) will show.......
(A) Linkage isomerism.
(B) Ionization isomerism
(C) Coordination isomerism
(D) Geometrical isomerism
Choose the correct answer from the options given below:

Find the drift velocity of electrons in a metal conductor having density of conduction electrons \(9 \times 10^{28} m^{-3}\) of cross sectional area \(2 \times 10^{-7} m^2\) carrying 2 A current :