\(ZnS , AgCl , AgBr\) and \(A g I\) show which of the following defect:

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 liquid at \(20^{\circ} C\) ?
A. HCl
B. HI
C. HF
D. NH3
E. HBr
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Match the complexes given in List-I with the number of unpaired electrons given in List-II

List-I (Complexes)	List-II (No. Of unpaired electrons.)
(A) \(\left[ Ti \left( H _2 O \right)_6\right]^{3+}\)	(I) 1
(B) \(\left[ NiF _6\right]^{4-}\)	(II) 5
(C) \(\left[ Fe ( CN )_6\right]^{4-}\)	(III) 2
(D) \(\left[ MnF _6\right]^{4-}\)	(IV) 0

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Which of the following vitamins is soluble in water?

Answer the questions on the basis of passage given below :
As aldehydes ketones possess the carbonyl functional group, they show similar reactions. They exhibit nucleophilic addition reactions, reduction, oxidations, reactions due to alpha-Hydrogen atom, and many other reactions, like Cannizzaro reaction to electrophilic substitution reactions (in case of aromatic aldehydes ketones).
These reactions help in the preparation of a number of important compounds, like acetic acid, vinyl acetate, polymers and in perfume and dye industries. Nucleophilic addition reactions form cyanohydrins, acetals, alcohols and N -substituted derivatives like imine, oxime, semicarbazone, phenylhydrazone Schiff's base. Reactions due to alpha-hydrogen atoms help in formation of aldols and alpha, beta-unsaturated aldehydes ketones.
Which of the following does not give iodoform test?


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The rate of a chemical reaction doubled for every \(10^{\circ} C\) rise in temperature. If the temperature is raised by \(50^{\circ} C\), the rate of reactions will be

Slope of the graph given is \(-9.2 J / mol\). The activation energy for the reaction is : [Given \(R =8.3 J K ^{-1} mol^{-1}\) ] 

\(30\text{ mL}\) of \(\text{NiSO}_4\) is electrolysed using a current of \(360\text{mA}\) for \(30\text{ minutes}\).
How much of the metal would have been plated out if the current efficiency is only \(60\%\)? (\(\text{Ni} = 58.7\text{g/mol}\))

A parallel plate air capacitor has a capacitance C. When it is half filled with a dielectric of dielectric constant 5, the percentage increase in the capacitance will be

The reasons why not both the strands of DNA are copied during transcription are:
(A) Replication fork will not be formed
(B) The two RNA molecules synthesised will form dsRNA molecule
(C) Complicate the genetic information transfer machinery
(D) dsRNA molecule will not be translated into proteins
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The Chelating ligand used for the estimation of hardness of water is

Match List-I with List-II.
If the random variable z has the following distribution:

X	0	1	2	otherwise
P(x)	k	k	2k	0

List-l & List-ll

List-I	List-II
(A) k	(I) \(\frac{3}{4}\)
(B) \(P(x \geq 2)\)	(II) \(1 / 4\)
(C) \(P(x \leq 2)\)	(III) \(\frac{1}{2}\)
(D) \(P(0<x \leq 2)\)	(IV) 1

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Two coaxial solenoids having number of turns per unit length 50 and 200, respectively, have same length 50 cm. The area of cross-section of the two solenoids are \( 4 \, \text{cm}^2 \) and \( 6 \, \text{cm}^2 \), respectively. The mutual inductance of the two solenoids is: