The correct sequence of attachment of sugar, base and phosphoric acid in a nucleic acid is
(A) Formation of phosphodiester linkage
(B) Attachment of base to 1' position of sugar
(C) Selection of appropriate base and sugar
(D) Attachment of phosphoric acid
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Which of the following could not be a rate determining step?

Match List - I with List - II.

List - I	List - II
(A) RNA	(I) Glycogen
(B) Invert sugar	(II) lactose
(C) Animal starch	(III) Ribose
(D) Milk Sugar	(IV) Sucrose

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Which of the following hormone is also known as flight or fight hormone?

Gabriel phthalimide synthesis is used for the preparation of :

Activation energy of a chemical reaction can be determined by

Question based on the following passage:
P-Block elements are placed in group 13 to 18 in the periodic table. Group 15 is nitrogen family.
Nitrogen can react with hydrogen, oxygen, halogens etc. It shows multiple oxidation states in its various oxides i.e. \(N_2O, N_2O_3, N_2O_5\) etc. Important allotropic forms of phosphorus are white, red and black phosporus. Various compounds of phosphorus are phosphine, \(PCl_3, PCl_5\) and oxoacids of phosphorus. Oxidation states \(+1\) to \(+5\) are seen in various oxoacids of phosphorus. Group 17 elements are collectively known as halogens. Bond dissociation enthalpy of \(F_2\) is smaller than \(Cl_2\).
The gases present in group 18 are chemically unreactive, they form only few compounds. Neil Bartlett (in 1962) observed the reaction of a noble gas. Since then, many noble gas compounds have been synthesised.
Amongst all noble gases, only Xe can form large number of compounds because :
(A) Its size is similar to that of Pt
(B) Its \(IE_1\) is almost identical with that of \(O_2\)
(C) Xe is not inert
(D) Xe is very large in size
(E) It has great affinity with \(PtF _6^{-}\)
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Identify the correct statements in the context of paramagnetic substances.
(A) In external magnetic field B, individual atomic dipole moment points in opposite direction of B.
(B) Susceptibility is small and positive.
(C) In non-uniform magnetic field, the paramagnetic bar will tend to move from weak field to strong.
(D) Examples of paramagnetic substances are Aluminium, Sodium and oxygen.
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Find the drift velocity of electrons in a metal conductor having density of conduction electrons \(9 \times 10^{28} m^{-3}\) of cross sectional area \(2 \times 10^{-7} m^2\) carrying 2 A current :

The least non-negative remainder when \(2^{101}\) is divided by \(5\) is:

Two point charges \( 3 \text{ } \mu\text{C} \) and \( -3 \text{ } \mu\text{C} \) are located at points \( A: (3 \text{ cm}, 0, 0) \) and \( B: (-3 \text{ cm}, 0, 0) \), respectively. The electric field at the origin is

Match List - I with List - II.

List – I	List – II
(A) Polyvinyl chloride	(I) Phenol formaldehyde
(B) Urea-formaldehyde	(II) Ethyleneglycol and phthalic acid
(C) Glyptal	(III) Vinyl chloride
(D) Bakelite	(IV) Urea-formaldehyde

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Which one of the following sex determination systems is found in honey bee?