CBSE Class 7 Science Acids Bases and Salts MCQs

CBSE Class 7 Science Acids Bases and Salts MCQs. Revision worksheets, Sample papers, Question banks and easy to learn study notes for all classes and subjects based on CBSE and NCERT guidelines. Students and parents can download free a collection of all study material issued by various best schools in India. The study material has been carefully compiled by the best teachers in India. The students should practice the questions database to get better marks in examination.Based on the same pattern as released by CBSE every year. Study material for final/ term/ SA1/ SA2 Examinations conducted by various schools affiliated to Central Board of Secondary Education (CBSE) in India and abroad. CBSE Study material has been compiled to help students preparation which will helps the students to concentrate more in areas which carry more marks.

Acids, Bases, and Salts

1.   Acids are ( )

a.  Sour in taste  b.  Sweet in taste  c.  salty in taste  d.   Bitter in taste

2.   Bases are ( )

a.   Sour in taste  b.   Sweet in taste c.  salty in taste  d.  Bitter in taste

3.   The substances that are used to test whether a substance is acidic or basic is called ( )

a.  Indicator  b.  Acid c.  Base  d.  Salt

4.   Give the chemical name of Lime water  ( )

a.  Calcium hydroxide  b.  Magnesium hydroxide  c.  Ammonium hydroxide d.  Sodium hydroxide 

5.  Give the chemical name of Milk of magnesia ( )

a.  Calcium hydroxide  b.   Magnesium hydroxide c.  Ammonium hydroxide  d.  Sodium hydroxide 

6.   Give the chemical name of Window cleaner ( )

a.  Calcium hydroxide  b.  Magnesium hydroxide 

c.  Ammonium hydroxide d.   Sodium hydroxide 

7.   Litmus paper (purple colour) in distilled water when added to an acid changes to ( 

a.   Red  b.   Blue  c.  Green  d.   Violet 

8.  The solutions which do not change the colour of either red or blue litmus are known as ( )

a.   Acid Solutions  b.   Base Solutions c.  Neutral Solutions  d.   indicator 

9.  Find the natural indicator from the following ( )

a.  China Rose  b.  Vinegar c.  Phenolphthalein  d.   Methyl Orange

10.  Phenolphthalein gives ____________colour in acid medium ( )

a.  Pink  b.  Colourless c.   Green  d.  Red

11.  The sting of an ant contains ___________. ( )

a.  Hydrochloric acid  b.   Formic acid c.   sulphuric acid  d.  Ethanoic acid

12.  The effect of sting of an ant can be neutralised by rubbing with ( )

a.  Calcium carbonate  b.   Sodium Carbonate c.  Sodium hydrogen carbonate d.   Calciumchloride 



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