NEWAll India NCERT Mock Test Series for JEE & NEET is now live!Take Free Test
HomeClass 10scienceAcids, Bases and SaltsExercise 1.1Q3
Acids, Bases and Salts | Exercise

Question 3

Q3. What happens when an acid reacts with a metal?

Jump to:
SOLUTION

When an acid reacts with a metal, it produces a salt and hydrogen gas.

Example:

Zn+2HCl→ZnCl2+H2↑\text{Zn} + 2\text{HCl} \rightarrow \text{ZnCl}_2 + \text{H}_2 \uparrow

This is a single displacement reaction.

→→→→

More questions in Acids, Bases and Salts

Q1Express the trigonometric ratios sin A, sec A and tan A in terms of cot A.Q1Evaluate the following (i) sin⁡60∘cos⁡30∘+sin⁡30∘cos⁡60∘\sin 60^\circ \cos 30^\circ + \sin 30^\circ \cos 60^\circ (ii) 2tan⁡245∘+cos⁡230∘−sin⁡260∘2 \tan^2 45^\circ + \cos^2 30^\circ - \sin^2 60^\circ (iii) cos⁡45∘sec⁡30∘+csc⁡30∘\dfrac{\cos 45^\circ}{\sec 30^\circ + \csc 30^\circ} (iv) sin⁡30∘+tan⁡45∘−csc⁡60∘sec⁡30∘+cos⁡60∘+cot⁡45∘\dfrac{\sin 30^\circ + \tan 45^\circ - \csc 60^\circ}{\sec 30^\circ + \cos 60^\circ + \cot 45^\circ} (v) 5cos⁡260∘+4sec⁡230∘−tan⁡245∘sin⁡230∘+cos⁡230∘\dfrac{5 \cos^2 60^\circ + 4 \sec^2 30^\circ - \tan^2 45^\circ}{\sin^2 30^\circ + \cos^2 30^\circ}Q2In Fig. 8.13, find tan⁡P−cot⁡R\tan P - \cot R.Q1Prove that 5\sqrt{5} is irrational.Q1How many tangents can a circle have?
Let A, B, and C be the sets such that A ∪ B = A ∪ C and A ∩ B = A ∩ C… — NCERT Solution | LearnPrep