JEE Advanced Chemistry Test 16

Result

JEE Advanced Chemistry Test 16

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Weekly Quiz Competition

Question 1
4 / -1

The formula of the following chain silicate (pyroxene) can be represented as

A

B

C

D

Solution

It is a chain silicate.
Question 2
4 / -1

is a first order reaction. If A is strong mono protic acid and B is strong diprotic acid and reaction kinetic is studied by using a standard solution of NaOH required toneutralise reaction mixture at different instants of time. When initially we had taken sameconcentration of A in each case.Now it was observer that volume required after 971 sec was double that required initially, then thehalf life of reaction is:

A
485 sec

B
1942 sec

C
3010 sec

D
971 sec

Solution
Question 3
4 / -1

Reduction potentials of some ions are given below. Arrange them in decreasing order of oxidizing power.

Ion ClO₄⁻ IO₄⁻ BrO₄⁻

Reduction potential E^∘/VE^∘= 1.19VE^∘= 1.65VE^∘= 1.74V

A
ClO₄⁻ > IO₄⁻ > BrO₄⁻

B
IO₄⁻ > BrO₄⁻ > ClO₄⁻

C
BrO₄⁻ > IO₄⁻ > ClO₄⁻

D
BrO₄⁻ > ClO₄⁻ > IO₄⁻

Solution

The reduction potential of the substance is the ability of the substance to be reduced.So as the reduction potential increases reducing ability of the substance increases.It means oxidizing power of the substance (The ability of the substance to make the other substance to lose the electrons increases which noting but oxidizing power) increases.

So the decreasing order of oxidizing power is BrO₄⁻ > IO₄⁻ > ClO₄⁻
Question 4
4 / -1

Compound A and B, both were treated with NaOH , producing a single compound C:

A

B

C

D

Solution
Question 5
4 / -1

For the reaction NH3 . If Kp of the above reaction is 78.1 at 400⁰C which is not correct:

A
At pressure P degree of dissociation of 3 NH is

B

C
If we increase pressure it will decrease K

D
If we increase P by bringing piston down , then, degree of dissociation α will decrease

Solution
Question 6
4 / -1

Directions For Questions

20 mL of KOH solution was titrated with 0.20 mol L^-1 H₂SO₄ solution in a conductively cell. The data obtained were plotted to give the graph shown below:

...view full instructions

The concentration of the KOH solution was:

A
0.30 mol L^-1

B
0.15 mol L^-1

C
0.12 mol L^-1

D
0.075 mol L^-1

Solution

Volume of H₂SO₄ used at equivalence point is 15mL.

15 x 0.2 x 2 = 20 x conc. Conc. = 0.3
Question 7
4 / -1

Potash alum contains the metals like potassium and aluminium. What are the metal ions present in chrome alum?

A
Chromium and aluminium only

B
Iron and aluminium

C
Potassium and chromium only

D
Potassium, chromium and aluminium

Solution
Question 8
4 / -1

For a gaseous reaction, the rate of reaction is expressed in terms of dp/dt instead of dc/dt or dn/dt where C is concentration and n is the number of moles. Hence, the relation between expression is:

A

B

C

D
none of these

Solution