Chemistry Test 154

Result

Chemistry Test 154

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

A

B

C

D

Solution
Question 2
4 / -1

A

B

C

D

Solution
Question 3
4 / -1

Amongst the following, identify the species with an atom in + 6 oxidation state:

A

B

C

D

Solution
Question 4
4 / -1

Which one of the following pairs of substances will not produce hydrogen when reacted together?

A
Copper and conc. nitric acid

B
Ethanol and metallic sodium

C
Magnesium and steam

D
Phenol and metallic sodium

Solution
Question 5
4 / -1

A

B

C

D

Solution
Question 6
4 / -1

Carbon and silicon belong to group 14. The maximum coordination number of carbon in commonly occurring compounds is 4, whereas that of silicon is 6. This is due to

A
large size of silicon

B
more electropositive nature of silicon

C
availability of d-orbitals in silicon

D
Both (a) and (b)

Solution

Due to non-availability of vacant d-orbitals, it cannot exceed its coordination number more than four. Thus carbon never forms complexes e.g., exists.
Question 7
4 / -1

The reason for the loss of optical activity of lactic acid when OH group is changed by H is that:

A
Chiral centre of the molecule is destroyed

B
Molecule acquires asymmetry

C
Due to change in configuration

D
Structural change occurs

Solution
Question 8
4 / -1

A
benzaldehyde

B
toluic acid

C
phenyl acetic acid

D
benzoic acid

Solution
Question 9
4 / -1

Formation of photochemical smog takes place in

A
winter during day time

B
summer during morning time

C
summer during day time

D
winter during morning time

Solution

Photochemical smog is formed in noon in summer.
Question 10
4 / -1

Which of the following solids is not an electrical conductor?

A

B

C

D

Solution