Practice Questions bank - general science mcq Online Quiz (set-1) For All Competitive Exams

Q-1)   Two elements gallium and oxygen combine to form a compound Ga₂O₃. Which among the following is the valency of gallium ?

(a) 3

(b) 1

(c) 2

(d) 4

Q-2)   Acid turn blue litmus –

(a) red

(b) yellow

(c) green

(d) orange

Q-3)   Consider the following statements.

1. Anhydrous Sodium bicarbonate is commonly known as baking sodium (baking soda).
2. Baking soda is used as a fire extinguisher.
3. Bleaching powders are produced in Hasnclaver plant.

Which of these statements is right.

(a) 2 and 3

(b) Only 3

(c) 1, 2 and 3

(d) 1 and 2

Q-4)   Which one of the following materials is very hard and very ductile?

(a) Cast iron

(b) Carborundum

(c) Tungsten

(d) Nichrome

Q-5)   Match List-I with List-II and select the correct answer using the codes given below the lists:

List-I	List-II
A. Neela thotha	1. Sodium Bicarbonate
B. Epsom salt	2. Sodium Hydroxide
C. Baking soda	3. Magnesium Sulphate
D. Caustic soda	4. Copper Sulphate

Code: (A) (B) (C) (D)

(a) 4 3 2 1

(b) 3 4 1 2

(c) 3 4 2 1

(d) 4 3 1 2

Q-6)   Match List-I with List-II and select the correct answer using the codes given below the lists:

List-I (Mineral)	List-II (Industries in which largely used)
A. Limestone	1. Cement
B. Copper	2. Electrical goods
C. Bauxite	3. Manufacture of aeroplanes
D. Manganese	4. Steel

Code: (A) (B) (C) (D)

(a) 3 2 1 4

(b) 3 4 1 2

(c) 1 2 3 4

(d) 1 4 3 2

Q-7)   Natural indicator litmus is extracted from

(a) earthworms

(b) ants

(c) lichens

(d) algae

Q-8)   When eno salt is poured into the water, bubbles forms, which is due to

(a) $CO_2$ gas

(b) CO gas

(c) $O_2$ gas

(d) $H_2$ gas

Q-9)   Baking powder is

(a) a compound

(b) an element

(c) a mixture

(d) a salt

Q-10)   Which of the following is not a hydrated salt?

(a) Baking soda

(b) Washing soda

(c) Blue vitriol

(d) Epsom salt