Elements of group-15, 16 and 17 form compounds with hydrogen with general formula MH3, \(H2M\) and HX (called hydrogen halides). Stability of these hydrides, along with M-H bond strength and basic nature decreases down the group. Boiling point of these hydrides mainly depends on the strength of their inter molecular forces.
Which of the following is most basic among the following hydrides of group 16?

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The crystal field theory (CFT) is an electrostatic model which considers the metal-ligand bond to be ionic arising purely from electrostatic interactions between the metal ion and the ligand. Ligands are treated as point charges in case of anions or dipoles in case of neutral molecules. The five d orbitals in an isolated gaseous metal atom/ion have same energy, i.e., they are degenerate. This degeneracy is maintained if a spherically symmetrical field of negative charges surrounds the metal atom/ion. However, when this negative field is due to ligands (either anions or the negative ends of dipolar molecules like NH3 and H2O) in a complex, it becomes asymmetrical and the degeneracy of the dorbitals is lifted. It results in splitting of the d orbitals. The pattern of splitting depends upon the nature of the crystal field.
The colour of coordination compounds is attributed to

What will be the order of a reaction if its rate is expressed as
\(\text { Rate }=k[A]^{1 / 2}[B]^{3 / 2}\)

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Biomolecules are the organic compounds present as an essential constituents of living organisms in different cells. molecules are generally termed as macromolecules, which are carbohydrates, enzymes, nucleic acids, amino acids and proteins The etc. Carbohydrates are classified as sugars and non-sugars include sucrose, glucose, fructose, starch and cellulose. Enzymes are coordinated with various chemical reactions in nucleic acid. Nucleic acids are found in living organisms made up of proteins and atural polymers. Two types that are generally found in biological systems are DNA and RNA nucleic acid. Amino acids bifunctional groups of carboxyl and amino groups. Proteins are a class of biologically important compounds. They are crucial are to virtually all processes in living systems. Some of them are hormones, which serve as chemical messengers that coordinate certain biochemical activities.
The zwitterionic form of amino acid is

Which of the following pairs of solutions are isotonic?

Which of the following has the highest molar conductivity?

Calculate the magnetic moment (spin-only) of a trivalent ion in aqueous solution if its atomic number is 22 .

Which of the following is a molecular solid?

Which refining method is represented by the following equations ?
\(Zr+2I_2 \rightarrow ZrI_4\)
\(ZrI_4 \rightarrow Zr+ 2I_2\)

Which of the following statement(s) is/are incorrect?
(A) The Kirchhoff's laws are equally applicable in alternating current circuit and direct current circuits.
(B) It is not necessary that the wire stretched on the meter bridge must have a uniform cross-sectional area.
(C) The internal resistance of the cell does not affect the reading of the null point in metre bridge.
(D) Electrical potential has no direction, the electrical potential gradient has a direction.

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

Identify the correct facts about downstream processing.
(A) The processes include separation and purification.
(B) The product has to be formulated with suitable preservatives.
(C) The prepared formulation does not require clinical trials as in case of drugs.
(D) Strict quality control testing for each product is also required.
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Match List-I and List-II.

List-I	List-II
(A) Adenine	(I) Purine
(B) Thymine	(II) Pyrimidine
(C) Uracil	(III) RNA
(D) Deoxyribose	(IV) DNA

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