Identify the correct statement about decomposition
(A) The rate of decomposition is quicker, if detritus is rich in nitrogen and sugar.
(B) Decomposition is largely an oxygen requiring process.
(C) The rate of decomposition is slow, if detritus is rich in chitin and lignin.
(D) The rate of decomposition is slow, if detritus is rich in nitrogen and sugar.
Choose the correct answer from the options given below:

Read the passage carefully and give the answers to the question :
India was amongst the first countries in the world to initiate action plans and programmes at a national level to attain total reproductive health as a social goal.
These programmes called 'family planning' were initiated in 1951 and were periodically assessed over the past decades. Improved programmes covering wider reproduction-related areas are currently in operation. Creating awareness among the people about various reproduction-related aspects and providing facilities and support for building up a reproductively healthy society are the major tasks under these programmes.
'Saheli' - an oral contraceptive pill, also known as the 'Once a week' pill, was developed by :

Which one of the following drinks are produced by distillation?
(A) Whisky
(B) Brandy
(C) Wine
(D) Beer
choose the correct answer from the option given below:

Arrange the given steps involved in Polymerase Chain Reaction.
(A) Annealing
(B) Extension
(C) Denaturation
(D) Amplification
Choose the correct answer from the options given below:

Which one of the following disorders is a sex linked recessive disease?

Read the following paragraph carefully and answer the given questions.
In the year 1963 the two enzymes responsible for restricting the growth of bacteriophage in E. coli were isolated. The first restriction endonuclease - Hind II, whose functioning depended on a specific DNA nucleotide sequence was characterized five years later. It was found that Hind II always cut DNA molecules at a particular point by recognizing a specific sequence of six base pairs. This specific base sequence is known as the recognition sequence for Hind II. Besides Hind II, today we know more than 900 restriction enzymes that have been isolated from over 230 strains of bacteria, each of which recognize different recognition sequences.
Hind II is a restriction endonuclease because

Match List-l with List-ll

List-l (Enzymes)	List-II (Functions)
(A). DNA polymerase	(I). Transcribes precursor of mRNA (hnRNA)
(B). DNA ligase	(II). Transcribes rRNAs
(C). RNA polymerase	(III). Joins the DNA fragments
(D). RNA polymerase II	(IV). Catalyzes the polymerization of deoxynucleotides

the correct answer from the options given below:

If \(\left|\begin{array}{ccc}-a^2 & a b & a c \\ b a & -b^2 & b c \\ a c & b c & -c^2\end{array}\right|=4 x\), then \(x=\)

When a transistor is used as an Amplifier, the phase difference between the input and the output signal voltage is

If \(y=e^{\frac{1}{2} \log \left(1+\tan ^2 x\right)}\), then \(\frac{d^2 y}{d x^2}\) is equal to :

The area (in sq. units) of the region bounded by \(y=2 x+3\), the \(x\)-axis, and the ordinates \(x=-2, x=2\) is equal to

If \(\vec{a}=2 \hat{j}-\hat{k}, \vec{b}=2 \hat{i}-3 \hat{j}+\hat{k}\) and \(\vec{c}=-\hat{i}+\hat{k}\) are three vectors, then the area (in sq, units) of the parallelogram whose diagonals are \((\vec{b}+\vec{c})\) and \((\vec{a}+\vec{c})\) is

Which of the statements given below are correct with reference to corrosion:
(A) Corrosion covers the surfaces of metallic objects with oxides or other salts.
(B) In corrosion, a metal is oxidised by the loss of electrons to oxygen and results in the formation of oxides.
(C) Rust is hydrated ferric oxide.
(D) A sacrificial electrode is used to save an object from corrosion.
Choose the correct answer from the options given below.