Chemistry Full length Latest Pattern-2

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PHYSICS

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75
No of Questions
75
No of Questions
75
No of Questions
75
No of Questions
75

PHYSICS

No of Questions
75
No of Questions
75
No of Questions
75
No of Questions
75
No of Questions
75
Q 1.
An electron return from excited state to ground state in H-atom and emits a photon of wavelength \(\lambda\), the principle quantum number of excited state is given by






Q 2.
Which of the following are correct order of the enthalpy of hydration of \(Ca+^2, Mn+^2\) and \(Zn+^2\)






Q 3.
First ionisation energy is lowest for






Q 4.
The complex with inverse - spinel structure is






Q 5.
Amongst \(BCl_3\), \(CO_3^{-2},NO_3^-,CIO_3^{-},SO^{-2}_3,BO^{-2}_3,As_3^{2-}\) and\( SO_3\), the non-planar species are






Q 6.
For the titration of a 10 ml (aq) solution of \(CaCO_3\), 2 ml of 0.001 M \(Na_2 \)EDTA is required to reach the end point. The concentration of \(CaCO_3\) (molecular weight \(CaCO_3\) = 100) is






Q 7.
The oxidation states of S-atoms in Marshall’s acid and Caro’s acids are respectively






Q 8.
In carbon dating application of radio isotopes \(C_{14}\) emits






Q 9.
Which of the following compound does not decompose on heating?






Q 10.
The actual base pairs present in the double helical structure containing adenine (A), thymine (T), cytosine (C) and guanine (G) are






Q 11.
Find the P – O bonds are present in \(P_4O_6?\)






Q 12.
For hydrogen like atom with a nuclear charge Z, the energy of orbital with principal quantum number ‘n’ follows the relation






Q 13.
When hydrogen peroxide is added to acidified potassium dichromate, a blue colour is produced due to the formation of






Q 14.

The correct value of E° of a half cell in the following graph of E versus log m (molality) is








Q 15.
.If B.O.D. of a river is high, it means that the river is






Q 16.
Which of the following has unstable enol form?






Q 17.
During the addition polymerisation, the reaction proceeds via






Q 18.
The structure obtained when all the tetrahedral holes are occupied in a fcc structure of the type






Q 19.







Q 20.

The major product formed in the following reaction is








Q 21.
0.3 mol of NaCl and 0.3 mol of \(CaCl_2\) were dissolved in water to produce a 800 ml solution. The molarity of the Cl– ions is
Q 22.
For water \(\Delta\)Hvap\( \approx\) 41 kJ/mol, the molar entropy of vaporisation at 1 atm pressure and its boiling point is approximately
Q 23.

.PQ3(g) dissociates as \(PQ_3(g)\rightleftharpoons{PQ}_2(g)+\frac12Q_2(g)\)

When the initial pressure of PQ3 is 400 torr and the total pressure developed at equilibrium is 450 torr. What percentage fraction of \(PQ_3\) (g) is dissociated?


Q 24.

\(For\; the \;following\; reaction\\ 2MnO^-_4 + 5 H_2C_2O_4 + 6H^+ \to 2Mn^{+2} + 8H_2O + 10 CO_2\\ E° (MnO^-_4 / Mn^{+2}) = + 1.51 (V)\; and\; E° (CO_2 / H_2 C_2O_4) =\; – 0.49 V at\; 298 k, the\; equilibrium\; constant\; is \;10x . \\Find \;the \;value \;of\; x.\)


Q 25.

Find the sum of x, y and z in that order in the following process

\(xP + yOH^- \rightarrow{PH}_3 + zH_2PO_2 –\)


Q 26.
The root mean square speed of 4 g of He is 300 \(ms^{–1.}\) Total kinetic energy of He gas is
Q 27.

For a reaction, the rate constant K at 27°C was found to be

\(K = 5.4 * 10^{11} e–{50}\)

The activation energy of the reaction is


Q 28.

An ideal gas is taken around the cycle ABCA as shown in PV diagram. The net work done during the cycle is equal to …..PV.


Q 29.

The number of possible isomers for the square planar mononuclear complex

\([(NH_3)2_M (CN)_2]\)of a metal M is


Q 30.
\(I_2(s) | I^-(0.1M)\) half cell is connected to a \(H^+(aq)|H_2(1\; bar)|\)Pt half cell and EMF is found to be 0.7714 V. If \(E^o_{I_2/I^-}=0.535\;V\), the pH of \(H^+/H_2\) half-cell will be
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