Chemistry Mock Test - I

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Q 1.
When a metal is burnt, its weight is increased by 24 percent. The Equivalent weight of metal will be

Q 2.
The second ionization potentials in electron volts of oxygen and fluorine atoms are respectively given by

Q 3.
In which one of the following, the number of protons is greater than number of neutrons but number of protons is less than the number of electrons?

Q 4.
If the pressure of a gas contained in a closed vessel is increased by 0.4% and the temperature increased by 1K then the initial temperature must be

Q 5.

The correct order of decreasing dipole moment of

(I) toluene (II) m-dichlorobenzene

(III) o-dichlorobenzene (IV) P-dichlorobenzene

Q 6.
Among the following which is polar

Q 7.
The latent heats of fusion in \(Jg^{-1}\) of five substances A (mol. mass=18) B (mol. mass=20), C (mol.mass=30), D (mol. mass=60) and E(mol. mass =30) are respectively 80, 45, 90, 45, 45. Which of the following pair has same value of fusion \("\Delta H_{fusion} "\)?

Q 8.
The number of moles of \(CaCl_2\) needed to react with excess of \(AgNO_3\) to produce 4.31 gm of\(AgCl\)

Q 9.
What is the decreasing order of strength of bases? \(OH^{-},\;NH^{-}_2,\;H-C^{-},\;CH_{3}CH^{-}_2\)

Q 10.
The frequency of radiation emitted when the electron falls from \(n=4\) to \(n=1\) in a hydrogen atom will be (given IP of 18 1 \(H=2.18\times10^{-18}J\;atom^{-1}\) and \(h=6.625\times10^{-25}JS\))

Q 11.
The addition of a catalyst to the reaction system

Q 12.
The vapour pressure of the solution of two liquids \(A\big(P^{\circ}=80\;mm\big)\) and \(B\big(P^{\circ}=120\;mm\big)\) is found to be \(100\;mm\) when \(X_4=0.4\) The result shows that

Q 13.
A metal M readily forms water soluble sulphate \(MSO_4\) , Water insoluble hydroxide\(M(OH)_2\) and oxide \(MO\) , which becomes inert on heating. The hydroxide is soluble in \(NaOH\) . The metal is

Q 14.
Which of the following is colourless?

Q 15.
The number of isomers of the compound \(C_2BrFCll\) is

Q 16.
Which of the following dissolves in \(H_2SO_4\) to give oleum?

Q 17.
An organic compound A of the formula \(C_7H_8O\) is soluble in \(NaOH\) but not in \(NaHCO_3\) . On treatment with bromine water it gives a tribromo product. The compound A is

Q 18.
Chlorine water oxidises sodium thiosulphate to

Q 19.
Which statement is true regarding following reactions \(trans-2-\) Butene  \(\underrightarrow{HCO_3H\;\;\;\;\;}\) \(Acis-2-\) Butene \(\underrightarrow{HCO_3H\;\;\;\;\;}\) \(B\)

Q 20.
Which of the following is not a protonic and?

Q 21.
Which of the following is not formed as an intermediate in the Reimer-Teimann reaction between phenol and alkaline chloroform?

Q 22.
Equivalent amounts of \(H_2\) and \(I_2\) are heated in a closed vessel till equilibrium is obtained. If 80% of the \(H_2\) can be converted to \(HI\), the \(K_c\) at this temperature is

Q 23.
Which of the following statement(s) is/are true?

Q 24.
At 300K 36 g of glucose present in a litre of its solution has an osmotic pressure of 4.98 bar. If the osmotic pressure of the solution is 1.52 bar at the same temperature, what would be its concentration?

Q 25.
The type of hybrid orbitals used by chlorine atom in \(ClO^-_2\) ions:

Q 26.
Calculate the amount of work done by two moles of an ideal gas at 298 K in reversible isothermal expansion from 10 litre to 20 litre [log2 0.3010 = ]

Q 27.
Which shows highest magnetic moment?

Q 28.
The emf of the cell reaction, \(Zn_{(s)}+Cu^{+2}_{(ag)}\rightarrow Zn^{+2}_{(ag)}+Cu_{(s)}\) is 1.1 V. Calculate free energy change for the reaction. If enthalpy of the reaction is \(-216.7\,KJ\,mol^{-1}\) , Calculate the entropy change of the reaction

Q 29.
The number of ions given by \(\Big[Pt\big(NH_3\big)_4Cl_2\Big]Cl_2\) complex in aqueous solution is equal to:

Q 30.
26.8 gm of \(Na_2SO_4nH_2O\) . contains 12.6 gm of water. The value of \(n\) is

Q 31.
\(O^{2-}_2\) is isoelectronic with:

Q 32.
How many moles of \(He\) are produced when one mole of \(_{92}U^{238}\) disintegrates into \(_{82}Pb^{206}\) ?

Q 33.
Which of the following elements has highest electro positivity?

Q 34.
Consider the reaction: \(A\rightarrow B+C\) initial concentration of A is 1M. 20 min time is required for completion of 20% reaction. If \({d\over dt}\big[B\big]=K\big[A\big]\), then half-life \(\Big(t\;1/2\Big)\) t is \(\big(\log5=0.6989\;\log4=0.6020\big)\)

Q 35.
In a periodic table the basic character of oxides:

Q 36.
What will be the \(pH\) of a solution formed by mixing \(40cm^3\) of 0.1 M HCl with \(10cm^3\) of 0.45 M \(NaOH\)?

Q 37.
An element, \(X\) , forms compounds of the formula \(XCl_3,\;X_2O_5\) and \(Ca_3X_2\) but does not form \(XCl_5\) . The element \(X\) is

Q 38.
The compound  contains how many hyper conjugative hydrogen atoms

Q 39.
At STP if 1 mL of water contains 20 drops then number of molecules in a drop of water is

Q 40.

Arrange the following in the increasing order of stability


Q 41.
Under identical conditions of pressure and temperature, 2 L of gaseous mixture \((H_2\) and \(CH_2)\) effuses through a hole in 5 minutes whereas 2 L of gas \(X\) of molecular mass 36 takes 10 minutes to effuse through the same hole. The mole ratio of \(H_2:CH_4\) in the mixture is

Q 42.
How many coulombs are required for the oxidation of 1 mole of \(H_2O_2\) to \(O_2\) ?

Q 43.
Calculate the wavelength of light required to break the bond between two chlorine atoms in a chlorine molecule. The \(Cl-Cl\) bond energy is \(243\,KJ/\,mol.\big(h=6.6\times10^{-34}\,Js\big)\)

Q 44.

Number of stereo isomers of the given compound is.

Q 45.
Heat of neutralization of a strong acid \(HA\) and a weaker acid \(HB\) with \(KOH\) are \(-13.7\) and \(-12.7 \) K cal \(mol^{-1}\) . When 1 mole of KOH is added to a mixture containing 1 mole each of \(HA\) and \(HB\), the heat changes was \(-13.5\) K cal. In what ratio is the base distributed between \(HA\)and \(HB\).

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