Question

i. Oxidative rancidity is a reaction.
(a) addition (b) substitution (c) combination (d) free radical
ii. is defined as number of moles of solute present in 1 kg of solvent.
(a) Molarity (b) Molality (c) Mole fraction (d) Mole percentage
iii. A mixture of oil and water can be separated by using
(a) crystallization (b) fractional crystallization (c) sublimation (d) solvent extraction
iv. A dilute aqueous solution of is a weak antiseptic used for eyes.
(a) Iodine (b) Sulphuric acid (c) Boric acid (d) Carbolic acid
v. Which of the following property of matter is not a quantitative in nature
(a) mass (b) colour (c) length (d) volume
vi. The chemical used to slow down the browning action of cut fruit is
(a) SO2 (b) SO3 (c) H2SO4 (d) HCl
vii.SI unit of the electric current is
(a) Volt (b) Ampere (c) Newton (d) Kelvin

Answer 1

Answer:

1. combination
2. mole fraction
3. solvent extraction
4. boric acid
5. colour
6. SO2
7. Ampere