Acids, Bases & Salts Mock Tests

28 questions available

Acids, Bases & Salts Mock Test 1

Questions: 28

Sample Questions

Class 7 Science

Which of the following is a natural indicator?

A Synthetic dye

B Litmus

C Food colouring

D BHT

Class 7 Science

Turmeric stain on a white cloth turns pink when washed with soap because soap is:

A Acidic

B Neutral

C Basic

D Saline

Class 7 Science

Which natural indicator turns pink in an acidic solution and yellow in a basic solution?

A Litmus

B Turmeric

C China rose

D Brilliant green

Class 7 Science

Which of the following is a strong base?

A Vinegar

B Sodium hydroxide

C Citric acid

D Acetic acid

Class 7 Science

Which of the following is a base?

A Sodium hydroxide

B Hydrochloric acid

C Acetic acid

D Citric acid

Class 7 Science

Which of the following is used to treat indigestion?

A Hydrochloric acid

B Antacids like baking soda

C Vinegar

D Lemon juice

Class 7 Science

Litmus solution is derived from which source?

A Synthetic chemicals

B Lichen

C Red roses

D Turmeric

Class 7 Science

Which indicator turns red in an acidic solution and blue in a basic solution?

A Turmeric

B Litmus

C China rose

D Phenolphthalein

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