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

The following statements describe various properties of a Mercury cell :
(A) It converts energy of combustion into electrical energy
(B) It is rechargeable
(C) The cell reaction involved is Zn(Hg) + HgO(s) \(\rightarrow\) ZnO(s) + Hg(l)
(D) It is a low current device used in hearing aids
Choose the correct answer from the options given below :

The aqueous solutions of the following salts were electrolyzed for 30 min with a current of 20 amp. Arrange the
following in the increasing order of the amount of metal deposited at the cathode.
(A) \(\mathrm{WCl}_6\)
(B) \(\mathrm{ZnSO}_4\)
(C) \(\mathrm{HfCl}_4\)
(D) \(\mathrm{AgNO}_3\)
(Atomic mass of: W =184 u, Zn = 65 u, Hf = 178 u and Ag = 108u)
Choose the correct answer from the options given below:

Read the passage carefully and answer the questions
Carbohydrates such as cane sugar, glucose, starch etc. belong to a class of naturally occurring organic compounds. Structurally these are polyhydroxy aldehydes or ketones or the compounds which produce such units on hydrolysis. Carbohydrates which are sweet in taste are called sugars. Theses sugars can be reducing or non-reducing. Monosaccharides cannot be hydrolyzed to simpler units whereas Oligosaccharides yield two to ten monosaccharide units on hydrolysis. Polysaccharides yield large number of monosaccharide units on hydrolysis. This class of biomolecules is essential for living systems as they serve as storage molecules in plants and animals. In addition, they provide raw materials for important industries like furniture, textiles, paper, lacquers and breweries. Two aldopentose form important constituents of nucleic acids. Carbohydrates are also called saccharides (Greek: sakcharon which means sugar). Sugar which is used in household and in milk also comes under this class of biomolecules.
Which sugar is known as milk sugar?

The rate constant for a zero order reaction was found to be \(1.0 \times 10^{-3} mol L ^{-1} s^{-1}\).
How long will 1.0 mol of the reactant take to reduce to 0.5 mol in one liter flask?

Answer the question on the basis of passage given below :
A colloid is a heterogeneous system in which a substance is dispersed (dispersed phase) as fine particles in another substance called dispersion medium.
Their particle size is intermediate between that of pure solutions (less than 1 nm) and suspensions (greater than 1000 nm). They are known for interesting properties such as enormous surface area, Tyndall effect, Brownian motion etc.
They are widely used in industries and day to day life.
Some prominent uses of colloids are those in smoke precipitators, purification of water, medicines, cleansers etc.
Which of the following electrolyte exhibits maximum flocculating power in the coagulation of a positive metal hydroxide sol?

Answer the question on basis of passage given below :
The noble gases have closed shell electronic configuration and are monatomic gases under normal conditions. The low boiling points of lighter noble gases are due to the weak dispersion forces between the atoms and the absence of other inter atomic interaction. The direct reaction of xenon with fluorine leads to a series of compounds with oxidation numbers \(+2, +4\) and \(+6\).
\(\text{XeF}_4\) reacts violently with water to give \(\text{XeO}_3\). The compound of Xenon exhibit stereoisomerism and their geometries can be deduced considering the total number of electrons in the valence shell.
Structure of \(\text{XeO}_3\) is:

Reserpine is an active chemical of which plant?

Match List-I with List-II

List-I	List-II
(A) Faraday's Law	(I) Current induced in a conductor moving perpendicular to a magnetic field
(B) Lenz's Law	(II) Direction of force on a straight current carrying conductor placed perpendicular to a magnetic field
(C) Fleming's right hand rule	(III) Magnitude of induced emf
(D) Fleming's left hand rule	(IV) Direction of induced current

Choose the correct answer from the options given below:

Which one of the following options will express intermediate skin colour in an individual?

Match List-I (biomolecule) with List-II (characteristics)

List-I (biomolecul)	List-II (characteristic)
(A) Lactose	(I) Menstrual cycle
(B) Glycine	(II) Bleeding gums
(C) Ascorbic acid	(III) Optically inactive
(D) Estradiol	(IV) Reducing sugar

Choose the correct answer from the options given below:

In the form of dichromate, Cr(VI) is a strong oxidising agent in acidic medium but Mo (VI) in MoO3 and W (VI) in WO3 are not. Choose the correct reason from the options given below:
(A) Cr (VI) is more stable than Mo (VI) and W (VI)
(B) Mo (VI) and W (VI) are more stable than Cr (VI)
(C) Higher oxidation states of heavier members of group-6 of transition series are more stable
(D) Lower oxidation states of heavier members of group-6 of transition series are more stable
Choose the correct answer from the options given below:

Read the given passage and answer the question.
ABO blood groups in human beings are controlled by the gene I. The plasma membrane of the red blood cells has sugar polymers that protrude from its surfaces and the kind of sugar is controlled by the gene. The gene (I) has three alleles IA, IB and I. The alleles IA and IB produce a slightly different form of the sugar while allele i does not produce any sugar. Because humans are diploid organisms, each person possesses any two of the three I gene alleles, IA and IB are completely dominant over i.
The genotype of Universal donor is: