Chemistry Test 166

Result

Chemistry Test 166

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Weekly Quiz Competition

Question 1
4 / -1

Which of the following statements is/are correct about the zero order reaction?

A
Unit of rate constant is

B
Unit of rate constant is

C
Rate of reaction depends on decay constant

D
Rate of reaction is independent of concentration

Solution

Rate of reaction of zero order reaction is independent of concentration of reactants. It depends on the rate constant.

[R] = - kt

where, [R] = rate of reaction

k = rate constant

t = time
Question 2
4 / -1

A
80 s

B
40 s

C
400 s

D
200 s

Solution
Question 3
4 / -1

When is plotted against log P, we get a straight line with slope

A
m

B
n

C
x

D
1/n

Solution
Question 4
4 / -1

When gelatin is added to an ice-cream, it plays a role as a/an

A
coagulating agent

B
emulsifying agent

C
peptising agent

D
flocculating agent

Solution

Emulsifying agent is added to stabilise the emulsion. Emulsifying agent forms a layer between suspended particles and the medium and hence stabilises the emulsion. Ice-cream (emulsion) is stabilised by emulsifying agent like gelatin.
Question 5
4 / -1

The gas which is adsorbed greatly by activated charcoal is

A

B
CO₂

C
NO₂

D
SO₂

Solution

Among the given option, activated charcoal greatly adsorbs the SO2 gas. Activated charcoal is used in high quality air purifiers and masks to adsorb the poisonous gases.
Question 6
4 / -1

In the complex ion the NH3 molecules are linked to the central metal ion by

A
ionic bonds

B
covalent bonds

C
coordinate bonds

D
hydrogen bonds

Solution
Question 7
4 / -1

Which one of the following is ambidentate ligand?

A

B

C

D

Solution
Question 8
4 / -1

A
4

B
3

C
2

D
1

Solution
Question 9
4 / -1

Among the following species, the one which imparts colour to an aqueous solution is

A

B

C

D

Solution
Question 10
4 / -1

Which of the following statements is/are correct about the ionisation energy of Cu and Zn?

A
of Zn is more than that of Cu

B
of Cu is more than that of Zn

C
of Cu is less than that of Zn

D
Both (B) and (C)

Solution