## Chemistry Mock Test - I

### PHYSICS

##### 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 $$HB$$.