Chemistry Test 187

Result

Chemistry Test 187

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Weekly Quiz Competition

Question 1
4 / -1

Identify the incorrect statement :

A
units share two oxygen atoms.

B
Trialkylchlorosilane on hydrolysis gives

C
SiO₄ undergoes hydrolysis to give

D
has cyclic structure.

Solution
Question 2
4 / -1

A similarity between optical and geometrical isomerism is that

A
each forms equal number of isomers for a given compound

B
if in a compound one is present then so is the other

C
both are included in stereoisomerism

D
they have no similarity.

Solution

Stereoisomerism involve those isomers which contain same ligands in their co–ordination spheres but differ in the arrangement of these ligands in space. Stereo–isomerism is of two type geometrical isomerism and optical isomerism. In geometrical isomerism ligands occupy different positions around the central metal atom or ion.

In optical isomerism isomers have same formula but differ in their ability to rotate directions of the plane of polarized light.
Question 3
4 / -1

The gas liberated by the electrolysis of Dipotassium succinate solution is:

A
Ethane

B
Ethyne

C
Ethene

D
Propene

Solution
Question 4
4 / -1

Which of the following is a sink for CO ?

A
Microorganism present in the soil

B
Oceans

C
Plants

D
Haemoglobin

Solution

Microorganisms present in the soil is a sink for CO.
Question 5
4 / -1

The packing fraction for a body-centred cubic is

A
0.42

B
0.53

C
0.68

D
0.82

Solution

The p.f. for body centred cube = 0.68
Question 6
4 / -1

25.3 g of sodium carbonate, Na₂CO₃ is dissolved in enough water to make 250 mL of solution. If sodium carbonate dissociates completely, molar concentration of sodium ions and carbonate ions are respectively (Molar mass of )

A
0.955 M and 1.910 M

B
1.910 M and 0.955 M

C
1.90 M and 1.910 M

D
0.477 M and 0.477 M

Solution
Question 7
4 / -1

Consider the following cell reaction:

A
1.47 V

B
1.77 V

C
1.87 V

D
1.57 V

Solution
Question 8
4 / -1

A

B

C

D

Solution
Question 9
4 / -1

Which of the following is not a favourable condition for physical adsorption?

A
High pressure

B
Negative

C
Higher critical temperature of adsorbate

D
High temperature
Question 10
4 / -1

Which of the following pair is incorrectly matched ?

A

B

C

D

Solution

Zincite is ZnO