Science Quiz for SSC CGL 2016 , SSC CPO, SSC CHSL and Railways

Dear Readers , we are providing you a Chemistry quiz based on SSc CGL 2016, and SSC CPO, SSC CHSL and railways.

1. Which one of the following is not a mixture –

(a) air

(b) mercury

(c) milk

(d) cement

2. Among the given nutrients. Milk is a poor source of –

(a) calcium

(b) protein

(c) carbohydrate

(d) vitamin C

3. Oxygen and ozone are –

(a) allotropes

(b) isomers

(c) isotopes

(d) isobars

4. Which of the following is an element ?

(a) alumina

(b) brass

(c) graphite

(d) silicon

5. Which one of the following mixture is homogeneous ?

(a) starch and sugar

(b) methanol and water

(c) graphite and charcoal

(d) calcium carbonate and calcium bicarbonate

6. Which one of the following substances does not have a melting point –

(a) bromine

(b) sodium chloride

(c) mercury

(d) glass

7. How many electrons are there in Na+

(a) 1

(b) 10

(c) 11

(d) 12

8. Which one among the following is the heaviest ?

(a) 1 mole of water molecules

(b) 1 mole of ammonia molecules

(c) 1 mole of sodium atoms

(d) 1 mole of hydrogen molecules

9. How many moles are there in 140 g of Si (atomic mass of silicon is 28) –

(a) 5

(b) 10

(c)  28

(d) 140

10. Which one of the following elements is the poorest conductor of heat ?

(a) sodium

(b) lead

(c) zinc

(d) mercury

Answers will be provided soon