Chemistry-Acid Bases and Salt (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 1 - 6 of 11

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Question number: 1

» Chemistry » Acid Bases and Salt

Appeared in Year: 2013

MCQ▾

Question

A salt can be produced by which reaction

  1. a weak acid and weak base
  2. metal oxide and water
  3. metal and a mineral acid
  4. metal oxide and a mineral acid

Choices

Choice (4) Response

a.

2, 3, 4

b.

4, 1, 2

c.

1, 2, 3

d.

3, 4, 1

Question number: 2

» Chemistry » Acid Bases and Salt

MCQ▾

Question

Consider the following pairs

I. Lemon-citric acid II. Sting-acetic acid

III. Bauxite-aluminum oxide IV. Calamine-zinc oxide

Which pairs is/are not correctly matched?

Choices

Choice (4) Response

a.

II and IV

b.

I and IV

c.

II and III

d.

II, III and IV

Question number: 3

» Chemistry » Acid Bases and Salt

MCQ▾

Question

An element when burnt in air forms an oxide which is a good dehydrating agent. The oxide on dissolution in water gives its oxyacid. The oxide forms salt with caustic soda but not with sulphuric acid. The oxyacid of the element is

Choices

Choice (4) Response

a.

phosphoric acid

b.

hypo phosphorus acid

c.

boric acid

d.

phosphorus acid

Question number: 4

» Chemistry » Acid Bases and Salt

MCQ▾

Question

Which of the following are used as an anti-acid to reduce acidity in stomach?

Choices

Choice (4) Response

a.

Sodium carbonate and magnesium hydroxide

b.

Magnesium hydroxide and sodium hydroxide

c.

Sodium bicarbonate and calcium hydroxide

d.

Sodium bicarbonate and magnesium hydroxide

Question number: 5

» Chemistry » Acid Bases and Salt

MCQ▾

Question

AlO4MNaOH Solution will have a pH of

Choices

Choice (4) Response

a.

4

b.

10

c.

8

d.

6

Question number: 6

» Chemistry » Acid Bases and Salt

MCQ▾

Question

The bleaching action of bleaching powder (CaOCl2) is due to

Choices

Choice (4) Response

a.

Cl2 present

b.

Ca present

c.

oxygen present

d.

Question does not provide sufficient data or is vague

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