Apple contains malic acid. Orange contains_______

(a)

citric acid

(b)

ascorbic acid

(c)

Tartaric acid

(d)

Oxalic acid

Acids turn blue litmus paper to_______

(a)

Green

(b)

Red

(c)

Orange

(d)

Pink

pH value of human blood is_________

(a)

7.0

(b)

7.4

(c)

7.6

(d)

7.6

You are given pure water to test the pH value using pH paper. It shows colour

(a)

White

(b)

black

(c)

green

(d)

black

Hydrochloric Acid reacts with metal bicarbonates to give______

(a)

metal chloride

(b)

water

(c)

carbon di - oxide

(d)

all the above

The molar ratio of hydrochloric acid and nitric acid in aquaregia is______

(a)

1:3

(b)

6:3

(c)

2:3

(d)

3:1

Bases ionise in water to form______ions

(a)

H⁺

(b)

H₃O⁺

(c)

OH^-

(d)

O^2-

Which of the following are the is a weak bases?

(a)

NH₄OH & NaOH

(b)

Ca(OH)₂& KOH

(c)

NH₄OH & Ca(OH)₂

(d)

NaOH & KOH

Which of the following solution is soapy to touch?

(a)

Acidic

(b)

Basic

(c)

Salt

(d)

Aquaregia

The pH value of neutral solution is______

(a)

=7

(b)

<7

(c)

none of the above

(d)

-7