Chemistry Test 191

Result

Chemistry Test 191

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Weekly Quiz Competition

Question 1
4 / -1

Mole fraction of the solute in a 1.00 molal aqueous solution i s :

A
0.1770

B
0.0177

C
0.0344

D
1.7700

Solution
Question 2
4 / -1

In acidic medium MnO₂ is an oxidant as

If the pH of solution is decreased by one unit, the electrode potential of the half cell Pt | will change by

A
0.236 V

B
– 0.236 V

C
– 0.118 V

D
0.118 V

Solution
Question 3
4 / -1

The given reaction is an example of

A
first order reaction

B
second order reaction

C
third order reaction

D
None of these

Solution

Third order
Question 4
4 / -1

the most effective coagulating agent for Sb2S3 sol is

A

B

C

D

Solution
Question 5
4 / -1

Which of the following reaction(s) occur in temperature range 500 – 800K in blast furnace.

A
(i) and (ii)

B
(i), (ii) and (iii)

C
(iii) and (iv)

D
(iv) only

Solution
Question 6
4 / -1

Oxidation of thiosulphate by iodine gives

A
tetrathionate ion

B
sulphide ion

C
sulphate ion

D
sulphite ion

Solution
Question 7
4 / -1

Parke’s process is used

A
to extract Ag using NaCN

B

C
to extract Ag from argentiferrous lead

D
to extract Ag by forming amalgam

Solution
Question 8
4 / -1

Which of the following name formula combinations is not correct?

A

B

C

D

Solution
Question 9
4 / -1

Replacement of Cl of chlorobenzene to give phenol requires drastic conditions but chlorine of 2, 4-dinitrochlorobenzene is readily replaced. This is because

A

B

C

D

Solution
Question 10
4 / -1

What is X in the following reaction ?

A

B

C

D

Solution