The total number of sigma bonds present in \(P _4 O _{10}\) are:

Identify transition metal complexes which are not octahedral in shape.
(A) \(\text{[Co(NH}_3)_6\text{]}^{3+}\)
(B) \(\text{[Ni(CO)}_4\text{]}\)
(C) \(\text{[CoCl(NH}_3)_6\text{]}^{2+}\)
(D) \(\text{[CoCl}_2\text{(NH}_3)_4\text{]}^{+}\)
(E) \(\text{[PtCl}_4\text{]}^{2-}\)
Choose the correct answer from the options given below :

Alcohol is more soluble in water when comparNo Solutioned to alkanes due to formation of

The standard reduction potentials are given as :
\(\text{E}^{\circ}_{\text{K}^{+}/\text{K}} = -2.93 \text{ V}\)
\(\text{E}^{\circ}_{\text{Ag}^{+}/\text{Ag}} = +0.80 \text{ V}\)
\(\text{E}^{\circ}_{\text{Cu}^{2+}/\text{Cu}} = +0.34 \text{ V}\)
\(\text{E}^{\circ}_{\text{Ni}^{2+}/\text{Ni}} = -0.25 \text{ V}\)
\(\text{E}^{\circ}_{\text{Li}^{+}/\text{Li}} = -3.05 \text{ V}\)
Arrange the following metals in increasing order of their reducing power :
A. K
B. Ag
C. Cu
D. Ni
E. Li
Choose the correct answer from the options given below :

Glycosidic linkage is formed by :

Read the passage carefully and answer the questions
Replacement of a hydrogen atom in a hydrocarbon by an alkoxy or carboxyl group yields a class of compounds known as ethers. Ethers are classified as symmetrical or unsymmetrical on the basis of groups attached to the oxygen atoms. Diethyl ether, a symmetrical ether, has been widely used as an inhalation anesthetic. Ethers can be prepared by acid catalyzed intermolecular dehydration of alcohols and Williamson's synthesis. Acid catalyzed dehydration of alcohols is not generally preferred as it gives a mixture of elimination and substitution products. In Williamson's synthesis, an alkyl halide is allowed to react with sodium alkoxide. Ethers containing substituted Alkyl groups may also be prepared by this method. The C-O bond in ether is weakly polar and is cleaved under drastic conditions with excess of hydrogen halides. In electrophilic substitution, the alkoxy group deactivates the aromatic ring and directs the incoming group to ortho and para positions.
Which type of ether is anisole ?

Number of coulombs required for the reduction of \(1\) mol of \(MnO_4^-\ \text{to}\ Mn^{2+}\) is:

What is the power factor of an ac circuit having resistance R and inductance L connected in series? (\( \omega \) is the angular frequency )

Match List-l with List-II

List-I(Sugar)	List-II(Example)
(A) Invert Sugar	(I) Lactose
(B) Milk Sugar	(II) Sucrose
(C) Dextrose	(III) Fructose
(D) Ketohexose	(IV) Glucose

Choose the correct answer from the options given below:

The solution of the differential equation \(\frac{d r}{d t}=-r t, r(0)=r_0\) is

The variance of the number of heads in two tosses of a coin is :

Which of the following hormone is released by pancreas and regulates body metabolic pathway?

The wavelength will be minimum in the transitions of electrons from: