Class 7 Acids Bases And Salts CBSE Questions & Answers
Class 7 · Acids Bases And Salts
This is Science Class 7 Acids Bases and Salts CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.
Questions & Answers
1
Acid turns blue litmus
- Agreen
- BOrange
- CPink
- DRedCorrect
2
Which of the following is a strong acid?
- AAcetic acid
- BSulphuric acidCorrect
- CCitric acid
- DMalic acid
3
Which gas is released when acid reacts with metals?
- ACarbon dioxide
- BOxygen
- CNitrogen
- DHydrogenCorrect
4
Which one is an organic acid?
- ALactic acidCorrect
- BHydrochloric acid
- CNitric acid
- DSulphuric acid
5
Which of the following is a natural indicator
- AMethyl orange
- BOxalic acid.
- CPhenolphthalein
- DTurmericCorrect
6
Lactic acid is found in
- AOrange
- BApple
- CCurdCorrect
- DVinegar
7
In case of indigestion, we use
- AAntipyretic
- BAntibiotic
- CAlcohols
- DAntacidsCorrect
8
All acids contain
- AOxygen
- BCarbon
- CHydrogenCorrect
- DNitrogen
9
Reaction between acid and base to form salt is called
- ADecomposition reaction
- BNeutralization reactionCorrect
- CCombination reaction
- DAddition reaction
10
What is the common name of sodium carbonate?
- ACaustic sodaCorrect
- BBaking soda
- CBlue vitriol
- DPhenol
11
Which one of the following metal does not release hydrogen gas with acids?
- AZinc
- BCopper
- CMagnesiumCorrect
- DIron
12
Sodium hydroxide is found in
- ACommon salt
- BPetrol
- CSoapCorrect
- DLemon table salt
13
Sodium chloride turns
- ANo change in colourCorrect
- BBlue litmus red
- CMethyl orange yellow
- DRed litmus blue
14
Which of the following is a strong Base?
- ACalcium oxide
- BIron hydroxide
- CCopper hydroxide
- DSodium hydroxideCorrect
15
Sour things contain
- ABases
- BNeutral
- CSalts
- DAcidsCorrect