Chemistry Test 190

Result

Chemistry Test 190

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Weekly Quiz Competition

Question 1
4 / -1

Under isothermal condition for one mole of ideal gas what is the ratio of work done under reversible to irreversible process, initially held at 20 atm undergoes expansion from 1L to 2L, at 298K, under external pressure of 10 atm?

A
1.7

B
2.0

C
1.4

D
1.0

Solution
Question 2
4 / -1

A

B

C

D

Solution
Question 3
4 / -1

The pair of compounds in which both the metals are in the highest possible oxidation state is

A

B

C

D

Solution
Question 4
4 / -1

Choose the correct statement :

The reason for use of polyphosphates as water softening agents is, that

A
they form soluble complexes with anionic species

B
they precipitate out cationic species

C
they precipitate out anionic species

D
they form soluble complexes with cationic species

Solution
Question 5
4 / -1

The metallic sodium disolves in liquid ammonia to form a deep blue coloured solution. The deep blue colour is due to formation of:

A

B

C

D

Solution
Question 6
4 / -1

Glass is a

A
super-cooled liquid

B
gel

C
polymeric mixture

D
micro-crystalline solid

Solution
Question 7
4 / -1

The percentage of sulphur in an organic compound whose

A
1.0

B
10.0

C
23.5

D
32.1

Solution
Question 8
4 / -1

The major product of the following reaction

A

B

C

D

Solution
Question 9
4 / -1

Which of the following is not a common component of photochemical smog?

A
Ozone

B
Acrolein

C
Peroxyacetyl nitrate

D
Chlorofluorocarbons

Solution
Question 10
4 / -1

Which of the following exists as covalent crystals in the solid state ?

A
Iodine

B
Silicon

C
Sulphur

D
Phosphorus

Solution

Among the given crystals, only silicon exists as a covalent solid. It has diamond like structure.