Choose the correct statements about organic farming:
(A) It does not use pesticides and urea.
(B) It uses only naturally produced inputs like compost.
(C) It utilizes genetically modified crops.
(D) It produces fruits rich in minerals and vitamins.
Choose the correct answer from the options given below:

Which one of the following hormones is produced only during pregnancy?

Punnett Square was developed by:

In which stage of sewage treatment, large amount of air is pumped into it?

Which of the following is TRUE for gel electrophoresis ?

Which of the following is correct in the context of haemophilia ?

Identify the incorrect fact about genetic modification.

Given \(X=\left[\begin{array}{cc}1 & 0 \\ -1 & 7\end{array}\right]\), then value of K if \(X^2=8 X+K I\) is :

A charged particle accelerated through a potential difference of V volts acquires a speed u. The particle is then made to enter perpendicularly in a uniform magnetic field B. The radius of the circular path followed by the charged particle will be proportional to

Read the passage carefully and answer the questions
Amines are considered as derivatives of ammonia obtained by replacement of hydrogen atoms with alkyl or aryl groups. In nature they occur among proteins, vitamins, alkaloids and hormones. These can be primary, secondary or tertiary depending on the number of hydrogen groups replaced. They can be prepared from nitro compounds, alkyl halides, nitriles, amides etc. Due to unshared pair of electrons they behave as Lewis bases. Influence of the number of hydrogen atoms at nitrogen atom is displayed in physical properties such as solubility, boiling point and chemical reactions including basicity. Basic character of amines is expressed in terms of their \(K_b\) and \(p K_b\) values. Three classes of amines can be distinguished with p-toluene sulphonyl chloride which reacts with primary and secondary ddu amines. Amino group when attached to benzene ring behaves as an activating and ortho para directing group.
Which of the following reaction is not given by aniline?

In Bt cotton plant, the insecticidal protein encoded by the genes cry1AC and cry IIAb control -

Which of the following nitrogenous base is NOT present in RNA ?

\(\tan ^{-1} \frac{1}{\sqrt{3}}-\sin ^{-1} \frac{1}{2}\) is equal to :