Chemistry Test 192

Result

Chemistry Test 192

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Weekly Quiz Competition

Question 1
4 / -1

What is the weight of oxygen required for the complete combustion of 2.8 kg of ethylene?

A
2.8 kg

B
6.4 kg

C
9.6 kg

D
96 kg

Solution
Question 2
4 / -1

If lo and l be threshold wavelength and wavelength of incident light, the velocity of photoelectron ejected from the metal surface is:

A

B

C

D

Solution
Question 3
4 / -1

A
I and V

B
V and II

C
II and V

D
IV and V

Solution

I represents Li, II represents K

III represents Br, IV represents I

V represents He

So, amongst these, II represents most reactive metal and V represents least reactive non-metal.
Question 4
4 / -1

A

B

C

D

Solution
Question 5
4 / -1

Two vessels containing gases A and B are interconnected as shown in the figure. The stopper is opened; the gases are allowed to mix homogeneously. The partial pressures of A and B in the mixture will be, respectively

A
8 and 5 atom

B
9.6 and 4 atm

C
4.8 and 2 atm

D
6.4 and 4 atm

Solution
Question 6
4 / -1

A

B

C

D

Solution
Question 7
4 / -1

A
9.58

B
4.79

C
7.01

D
9.22

Solution
Question 8
4 / -1

A

B

C

D

Solution

Higher the value of reduction potential higher will be the oxidising power whereas the lower the value of reduction potential higher will be the reducing power.
Question 9
4 / -1

From the following statements regarding choose the incorrect statement :

A
It has to be stored in plastic or wax lined glass bottles in dark

B
It has to be kept away from dust

C
It can act only as an oxidizing agent

D
It decomposes on exposure to light

Solution
Question 10
4 / -1

Magnesium wire burns in the atmosphere of CO₂ because

A
Magnesium acts as an oxidising agent

B
Magnesium has 2 electrons in the outermost orbit.

C
Magnesium acts as a reducing agent and removes oxygen from CO₂

D
None of these

Solution