The above reaction is an example of

The number of unpaired electrons in gaseous ions \(Mn ^{3+}, V ^{3+}, Cr ^{3+}\) are respectively:

Out of the following compounds, the chiral molecules are
(A) Butan-2-ol
(B) Propane-2-ol
(C) 2-Chlorobutane
(D) 2-Bromopropanoic acid
Choose the correct answer from the options given below:

In alcohols, carbon and oxygen atom are

Which of the following is correct about the nature of ligand?

Units of molar conductance is:

\(\text{T.N.T}\) is chemically known as:

Width of two slits in Young's double slits experiment are in the ratio 9:4.
The ratio of the amplitudes of light waves through them would be:

The number of trophic levels in the grazing food chain are restricted because of the:

If \(x=a \cos ^3 \theta, y=a \sin ^3 \theta\). The value of \(\frac{d^2 y}{d x^2}\) at \(\theta=\frac{\pi}{6}\) is :

If \(p\) is the probability of any event \(A\) then which one of the following statement is true?

Select the correct name for the following reaction:
\(\text { Acetone } \xrightarrow{NH_2 NH_3} \text { Hydrazone } \xrightarrow{KOH / \text { ethylenes syreol, Heet }} \text { Propane }+N_2\)

Read the following paragraph and answer the given questions.
Cancer detection is based on biopsy and histopathological studies. Techniques like radiography (use of X-rays), CT (computed tomography) and MRI (magnetic resonance imaging) are very useful to detect cancers of the internal organs. Do you know why mother's milk is considered very essential for the new-born infant? The yellowish fluid colostrum secreted by mother during the initial days of lactation has abundant antibodies (IgA) to protect the infant. Different species of Plasmodium (P. vivax, P. malaria and P. falciparum) are responsible for different types of malaria. Of these, malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal. The exaggerated response of the immune system to certain antigens present in the environment is called allergy. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy. Drugs like barbiturates, amphetamines, benzodiazepines, and other similar drugs, that are normally used as medicines to help patients cope with mental illnesses like depression and insomnia, are often abused. Morphine is a very effective sedative and painkiller, and is very useful in patients who have undergone surgery.
A pregnant female is advised not to discard the yellowish fluid called colostrum, secreted during the initial days of lactation, because it is rich in: