Punjab Board Solutions for Chapter: Acids, Bases and Salts, Exercise 1: Exercises

Author:Punjab Board

Punjab Board Science Solutions for Exercise - Punjab Board Solutions for Chapter: Acids, Bases and Salts, Exercise 1: Exercises

Attempt the free practice questions on Chapter 5: Acids, Bases and Salts, Exercise 1: Exercises with hints and solutions to strengthen your understanding. Science solutions are prepared by Experienced Embibe Experts.

Questions from Punjab Board Solutions for Chapter: Acids, Bases and Salts, Exercise 1: Exercises with Hints & Solutions

MEDIUM
7th Punjab Board
IMPORTANT

Ammonia is found in many household products, such as window cleaners. It turns red litmus blue. What is its nature?

EASY
7th Punjab Board
IMPORTANT

Sodium hydroxide turns blue litmus red.

EASY
7th Punjab Board
IMPORTANT

Sodium hydroxide and hydrochloric acid neutralize each other and form salt and water.

EASY
7th Punjab Board
IMPORTANT

Indicator is a substance which shows different colors in acidic and basic solutions.

EASY
7th Punjab Board
IMPORTANT

Tooth decay is caused by the presence of a base.

MEDIUM
7th Punjab Board
IMPORTANT

Explain why calamine solution is applied on the skin when an ant bites.

MEDIUM
7th Punjab Board
IMPORTANT

Explain why factory waste is neutralized before disposing it into the water bodies.

MEDIUM
7th Punjab Board
IMPORTANT

Consider the following statements:
(A) Both acids and bases change colour of all indicators.
(B) If an indicator gives a colour change with an acid, it does not give a change with a base.
(C) If an indicator changes colour with a base, it does not change colour with an acid.
(D) Change of colour in an acid and a base depends on the type of the indicator.
Which of these statements are correct?