Chemistry - Online Test
Q1. Minimum boiling azeotrope is form by the solution which show
Answer : Option D
Explaination / Solution:
Positively deviated non ideal solution forms Minimum boiling Point azeotropes.
Q2. In the reaction of metallic cobalt placed in nickel sulphate solution, there is a competition for release of electrons At equilibrium, chemical tests reveal that both Ni2+ (aq) and Co2+ (aq) are present at moderate concentrations. The result is that:
Answer : Option A
Explaination / Solution:
Reaction will not complete and It will remain at equilibrium.
Q3. What is the total number of atoms per unit cell in a face centered cubic structure?
Answer : Option C
Explaination / Solution:
In Fcc each atom at corner contributes 1 per unit cell while atoms at face centers contribute 3 to each unit cell. So Total no of atoms per unit cell is 4
Q4. The condensation of hexamethylene diamine with adipic acid forms
Answer : Option A
Explaination / Solution:
For nylon 6,6 hexamethylenediamine and adipic acid are monomer unit.
Q5. Which compound is used in the preparation of caprolactam?
Answer : Option C
Explaination / Solution:
NH3 is used in preparation of caprolactum. Caprolactam is an organic compound with the formula (CH2)5C(O)NH. It is used to make Nylon 6 fiber and plastics.
Q6. The molar heat capacity of a substance is the
Answer : Option C
Explaination / Solution:
The molar heat capacity of a substance is the quantity of heat needed to raise the temperature of one mole by one degree Celsius.
Q7. Carbonate ore of iron is
Answer : Option D
Explaination / Solution:
FeCO3 is siderite.
Q8. According to the recommendation of International Union of Pure and Applied Chemistry (IUPAC), the groups in the modern periodic table are numbered from
Answer : Option C
Explaination / Solution:
The groups are numbered from 1 to 18; where group 1 is alkali metal group and group 18 is for the noble gases.
Q9. Isotopes are the atoms with
Answer : Option D
Explaination / Solution:
The atoms of a chemical element can exist in different types. These are called isotopes. They have the same number of protons (and electrons), but different numbers of neutrons. Different isotopes of the same element have different masses.
Q10. Acid rain is :
Answer : Option A
Explaination / Solution:
The acidic gaseous pollutants like oxides of sulphur and nitrogen react with water and come down to earth in form of acid rain.
