Question

Which of the following is true for strong acid ?



1}Blue litmus remains blue

2}Red litmus paper turns blue

3}Blue litmus paper turns red

4}Red litmus remains red

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Answer 1

Answer:

Acidic solutions are sour in taste and strong acids have pH less than 7 which have the property of turning blue litmus paper to red. Hydrochloric acid (HCl), and sulphuric acid solution ar ethe example of acidic solution.

Hence, the correct option is C.

#SofiRizz... ❤

Answer 2

Red litmus remains red is true for strong acid.

Explanation:

• Option 4) red litmus remains red is strong acid.
• An acid and a base indication is litmus paper.
• The mixture is acidity if it turns the red paper blue.
• The litmus paper in the previous question is red, and if it is inserted in solutions and remains red, the solution is acidic since it has no impact on litmus paper.
• Option 1) Blue litmus remains blue is neutral
• In acid solution, the litmus technique is appropriate turns red, while in alkaline solutions, it turns blue.
• In neutral solutions, it becomes purple.
• The nature of a solution that does not affect the colour of blue litmus paper is either basic or neutral.
• Option 2) Red litmus paper turns blue is basic state or alkaline.
• The colour shift occurs throughout the pH range 4.5–8.3 at 25 °C (77 °F), with light-blue litmus paper turning red under acidic conditions and red litmus paper turning blue under basic or alkaline settings.
• Option 3) Blue litmus paper turns red under acidic condition.
• Universal indicator turns red in an alkaline condition, whereas litmus paper changes color in a basic (i.e. alkaline) environment.
• The pigment in blue litmus chemically reacts with H+ ions, causing the bonds to 'tune' to reflect a longer spectrum of light, making it seem red to human eyes.