CBSE Class 10 - Science - Unit 2 - Online Tests

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

CBSE Class 10 - Science - Unit 2 - Online Tests - “Acids, Bases and Salts”

Name: *

Gender:

Male

Female

Prefer not to say

Clear selection

School Name & Place:

Whatsapp Number:

(Optional)

State

CBSE Class 10 - Science - Unit 2 - Online Tests - “Acids, Bases and Salts”

Which one of the given acids is used in the treatment of bone marrow and scurvy diseases?

1 point

Acetic acid

Hydrochloric acid

Ascorbic acid

Nitric acid

Clear selection

Acid present in apple is :

1 point

Oxalic acid

Malic acid

Acetic acid

Formic acid

Clear selection

Which one of the given is hydracid?

1 point

H₃PO₄

H₂SO₄

HCN

HNO₃

Clear selection

Most of the oxides of metals when react with acid, form____

1 point

A base

An acid

A salt

Either (1) or (2)

Clear selection

Which of the given is a strong base?

1 point

Calcium hydroxide

Magnesium hydroxide

Ammonium hydroxide

Potassium hydroxide

Clear selection

Which one of the given is true, if a substance has a pH value of 4?

1 point

The substance is a base

The substance is an acid

The substance is a neutral substance

Either (1) or (2)

Clear selection

Which one of the given is true, if a substance has a pH value of 7?

1 point

The substance is a base

The substance is a acid

The substance is a neutral substance

Either (1) or (2)

Clear selection

In which one of the given reactions a salt is reacting with a base?

1 point

NaOH+HCl→NaCl+H₂O

Cu(OH)₂+H₂SO₄→CuSO₄+2H₂O

KOH+HCl→KCl+H₂O

6NH₄OH+Al(SO₄)₃→2Al(OH)₃+3(NH₄)₂SO₄

Clear selection

Which one among the given is a weak base?

1 point

Sodium hydroxide

Potassium hydroxide

Ammonium hydroxide

All the these

Clear selection

Which acid is used in cola to give it a biting sharp taste

1 point

Sulphuric acid (H₂SO₄)

Tartaric acid

Phosphoric acid

Citric acid

Clear selection

Range of pH scale is

1 point

7 to 10

0 to 10

0 to 14

7 to 14

Clear selection

Due to excess passing of CO2 through an aqueous solution of slaked lime, its milkiness fades because

1 point

Calcium carbonate is produced

Calcium bi-carbonate is produced

Calcium oxide is produced

Due to the production of more heat

Clear selection

The chemical formula of Gypsum is

1 point

CaSO₄,1/2H₂O

CaSO₄,2H₂O

CaSO₄,H₂O

CaSO₄,3H₂O

Clear selection

Which one is different from others

1 point

Nitric acid

Sulphuric acid

Tartaric acid

Phosphoric acid

Clear selection

Level of pH found in antacid solution

1 point

≤6.5

≥7.0

>10

>14

Clear selection

Black ash is

1 point

Dry KOH

Barium sulphide

Charcoal

Hydrated KOH

Clear selection

When electricity passes through NaCl aqueous solution

1 point

Sodium metal is deposited

Only Chlorine gas is produced

Chlorine & Hydrogen gases are produced

All of the given are produced

Clear selection

The colour of Methyl orange in basic medium is

1 point

Pink

Orange

Purple

Yellow

Clear selection

The pH of commonly used toothpaste is

1 point

<6.5

≥7.0

≥2.2

None of these

Clear selection

Phenolphthalein’s colour in basic medium is ____but in acid it is ______.

1 point

Pink, Colorless

Yellow, Pink

Pink, Orange

Blue, Red

Clear selection

You are given 3 unknown solutions with pH value as 6,8 & 9.5 respectively. Which solution will contain maximum OH⁻ ion?

1 point

Solution sample-1

Solution sample-2

Solution sample-3

Data are insufficient

Clear selection

The chemical formula of Plaster of Paris is

1 point

CaSO₄,1/2H₂O

CaSO₄, 2H₂O

CaSO₄, H₂O

CaSO₄, 3H₂O

Clear selection

Which of the following acid(s) never forms acidic salt? (a) HCl (b) H₃PO₄ (c) H₂SO₄ (d) H₂CO₃

1 point

(A) only

(D) only

(A) and (D) both

(A) and (C) both

Clear selection

PH scale of a neutral solution is

1 point

Clear selection

Butyric acid is found in

1 point

Rancid butter

Rancid cake

Stings of bees

All of these

Clear selection

Submit

Clear form

Never submit passwords through Google Forms.

Forms

This content is neither created nor endorsed by Google.