Class 7

Acids, Bases and Salts question bank (Science)

Practice 42 free Class 7 Science - Acids, Bases and Salts questions with answers and step-by-step solutions.

Start free Book a demo
All Easy Hard Medium
Q1.

When blue litmus paper is dipped into an acidic solution, what color change is observed?


(A)
Turns Red
(B)
Turns Green
(C)
Turns Yellow
(D)
Remains Blue
Show answer & solution
Verified Answer & Solution Locked
Sign in to your free student account to reveal verified answers, instant hints, and detailed explanations.
Sign in to view
Q2.

When a base is added to turmeric paste/stain, what colour change is observed?


(A)
Remains bright yellow
(B)
Turns deep blue
(C)
Turns reddish-brown
(D)
Turns colourless
Show answer & solution
Verified Answer & Solution Locked
Sign in to your free student account to reveal verified answers, instant hints, and detailed explanations.
Sign in to view
Protected Questions

Unlock All 42 Questions in Acids, Bases and Salts

Log in or sign up free to access every question with complete solutions, create chapter practice tests, and track your performance.

Sign in to unlock Create free account

Sign up free to access all 42 questions

Unlock every Acids, Bases and Salts question, generate papers, and practice at your own pace.

Start free