Test Preparation on IIT JEE Mains Mock Test-9

CHEMISTRY

At constant temperature in a reaction,
N2 + O2 2NO
equilibrium is established after the formation of
40 % NO. The value of kc will be

10.2
22.5
30.25
425

In a face cantered cubic arrangement each ion is
surrounded by six oppositely charged ions, i.e.,
coordination number is six. Radius ratio for
coordination number 6 is 0.414 – 0.732.

The first order reaction has a half-life period of
34.65 seconds, its rate constant is

12 × 10–3 s–1
224 × 10–2 s–1
320 s–1
42 × 10–2 s–1

CuSO4 reacts with KCN solution and forms

1Cu(CN)2
2Cu(CN)
3K4[Cu(CN)6]
4K3[Cu(CN)4]

CH4(g) + 4CuO(s)→ CO2(g) + 4Cu(s) + 2H2O(l)
- 74.9 -4 x 157.3 -393.5 -2 x 285.9
-74.9 – 629.2 = -704.1 -393.5 - 571.8 = 965.3
Enthalpy change of the reaction
= - 965.3–(-704.1) = -261.2

Equal volumes of 0.1 M AgNO3 and 0.2 M NaCl
solutions are mixed. The concentration of NO3–
ions in resulting solution will be

10.1 M
20.05 M
30.2 M
40.15 M

The addition of chlorine to the reaction mixture
shifts the equilibrium backwards, thereby releasing
more heat.

Silicones are

1Organometallic compounds
2compounds obtained from silica
3compounds obtained by hydrolysis of organochloro silanes
4macro molecules prepared from silicates

Mole fraction of naphthalene = 0.1
mole fraction of benzene = 0.9; amount of
benzene = 0.9 x 78 = 70.2
Molality of the solution =0.1X 1000/70.2
= 1.42 m

Which of the following is not a disaccharide?

1sucrose
2mannose
3lactose
4maltose

Polarisability of halide ions increases with the
increase in size of the anion.

The least acidic in the series of BF3, BCl3and BBr3
is BF3 because

1F is most electronegative
2F has a small size
3B3+ has a very small size
4Back donation of electrons from F to B

The gold number of a protective colloid is its
minimum amount in milligrams which is just
sufficient to prevent the coagulation of 10 ml of a
gold sol on the addition of 1 mL of 10% sodium
chloride solution. Amount in milligrams of 0.025
g. of starch is 25, so gold number is 25.

Which complex has square planar structure?

1Ni(CO)4
2[NiCl4]2–
3[Ni(CN)4]2-
4[Zn(NH3)4]2+

he tot l energy of Bohr’s orbit is proportion l
to 1/n2 .

By the electrolysis of an aqueous solution of
CuSO4, the products obtained at both the
electrodes are

1H2 at anode, Cu at cathode
2H2S2O8 at anode, O2 at cathode
3O2 at anode, H2 at cathode
4O2 at anode, Cu at cathode

Kp = Kc(RT)Δn
Δn = 2 – 0 = 2, therefore, Kp = Kc(RT)2


Right Ans	Wrong Ans	Not Attempted

CHEMISTRY At constant temperature in a reaction,N2 + O2 2NOequilibrium is established after the formation of40 % NO. The value of kc will be

The first order reaction has a half-life period of34.65 seconds, its rate constant is

CuSO4 reacts with KCN solution and forms

Equal volumes of 0.1 M AgNO3 and 0.2 M NaClsolutions are mixed. The concentration of NO3–ions in resulting solution will be