Download App

Acids, Bases and Salts — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceAcids, Bases and Salts1 Mark
MCQ
The acidic or basic nature of a substance is tested by using:
  • A
    Indicator
  • B
    Litmus paper
  • C
    Salt solution
  • ✓
    Both $A$ and $B$
✓

Answer

Correct option: D.
Both $A$ and $B$

Litmus paper is used to detect the acidic or basic nature of a substance. Color of litmus paper in acid: Blue litmus paper turns red when dipped in acidic solution.
Acid-base indicators (also known as pH indicators) are substances that change color with pH.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ (1 Marks)" from Acids, Bases and Salts→Acids, Bases and Salts — all question types→Science STD 7 question papers→Gujarat Board STD 7 question papers→Gujarat Board question paper generator→

Similar questions

Non-uniform motion occurs when:
→
Which of the following cannot produce a ringing sound when struck hard?
→
Length of small intestine is:
→
In our houses, we use a $..........$ to look at ourselves.
→
The percentage of $CO2$ in inhaled air is:
→
In a filtration plant water is filtered using layers of:
→
One complete rotation of the Earth takes nearly in:
→
Consider the following statements and choose the incorrect one:
→
The period 2005-2015 is being celebrated as the international decade for action on
→
Which of the following not a natural fibre?
→