Match List I with List II

\multicolumn1|c|\(LIST\)\(I\)	\multicolumn1|c|\( LIST\)\(II\)
A. \(Cu\)	I. \(+ 3\)
B. \(Sc\)	II. \(+ 7\)
C. \(Mn\)	III. \(+ 2\)
D.\(Fe\)	IV. \(+ 1\)

Choose the correct answer from the options given below:

The correct order of relative reactivity of alkyl halides towards \(S N^1\) reaction is:
(I) \(PhCH _2 Cl\)
(II) \(Ph _2 CHCl\)
(III) \(Ph _3 CCl\)

Pentan-2-one and pentan-3-one can be distinguished by

Match List-I with List-II

List-I	List-II
(A) Freons	(I) Paint remover
(B) DDT	(II) Refrigeration
(C) Dichloromethane	(III) Fire extinguisher
(D) Tetrachloromethane	(IV) Insecticide

Choose the correct answer from the options given below :

Answer the question on the basis of passage given below:
In the periodic table, the d-block contains the elements of group \(3\) to \(12\). The d-orbitals are progressively filled in each of the four long periods. The elements of d block referred as transition metals have partly filled d orbitals and exhibit certain characteristic properties such as variety of oxidation states, formation of coloured ions, act as catalyst and show paramagnetic behaviour.
The two inner transition metals series \(4f\) and \(5f\) are known as Lanthanoids and Actinoids respectively. The lanthanoids resemble one another more closely as compared to ordinary transition elements in any series.
In context of the Lanthanoids, which of the following statements is/are NOT correct?
A. There is a gradual decrease in the radii of the members with increasing atomic number in the series
B. Availability of \(4f\) electrons results in the formation of compounds in \(+4\) oxidation state for all the members of the series
C. Because of similar properties, the separation of lanthanoids is not easy
D. \(La(OH)_3\) is least basic among hydroxides of lanthanoids
E. Ce can act as an oxidising agent
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Allyl chloride on dehydrochlorination gives:

Answer the question on the basis of passage given below :
Nitrogen differs from rest of the members of group 15 due to its small size, high electronegativity, high ionization enthalpy and non-availability of d orbitals. Nitrogen has unique ability to form pa - pa multiple bonds with itself and with other elements having small size and high electronegativity. Heavier elements of this group do not form pa - pr bonds as their atomic orbitals are so large and diffuse that they cannot have effective overlapping.|
Match List I with List II.

LIST I (Nitrogen oxides)	LIST II (Oxidation state)
A. \(N _2 O\)	\(I. +3\)
B. \(N _2 O _3\)	\(II. +5\)
C. \(N _2 O _4\)	\(III. +1\)
D. \(N _2 O _5\)	\(IV. +4\)

Choose the correct answer from the options given below:

The distance estimation for which ray optics is good approximation for an aperture of 3 mm and wavelength 300 nm would be :

If \( \lambda_1 \) and \( \lambda_2 \) are the longest wavelengths of the Lyman and Paschen series respectively, then \( \lambda_1 : \lambda_2 \) is:

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.

Single step large mutations causing speciation are called:

Read the following paragraph carefully and answer the given questions.
In the year 1963 the two enzymes responsible for restricting the growth of bacteriophage in E. coli were isolated. The first restriction endonuclease - Hind II, whose functioning depended on a specific DNA nucleotide sequence was characterized five years later. It was found that Hind II always cut DNA molecules at a particular point by recognizing a specific sequence of six base pairs. This specific base sequence is known as the recognition sequence for Hind II. Besides Hind II, today we know more than 900 restriction enzymes that have been isolated from over 230 strains of bacteria, each of which recognize different recognition sequences.
Restriction enzymes are also known as

If the area bounded by the curve \(y^2 = 16x\) and the line \(y = mx\) is \(\frac{2}{3}\) sq. units, then the value of m is: