Chemistry (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 82 - 89 of 144

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 1058 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 450.00 or

Question number: 82

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

In the presence of concentrated sulphuric acid , acetic acid reacts with ethyl alcohol to produce

Choices

Choice (4) Response

a.

Aldehyde

b.

Ester

c.

alcohol

d.

carboxylic acid

Question number: 83

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Arrange the following elements in order of their increasing ionization energies O, S, Se, Te, Po

Choices

Choice (4) Response

a.

O, S, Se, Te, Po

b.

Po, Te, Se, S, O

c.

Se, Te, S, Po, O

d.

Te, O, S, Po, Se

Question number: 84

» Chemistry » Metals & Non Metals

MCQ▾

Question

Which one of the following is a non-metallic mineral?

Choices

Choice (4) Response

a.

Lead

b.

Copper

c.

Tin

d.

Limestone

Question number: 85

» Chemistry » Structure of Atom

MCQ▾

Question

How many moles are in 5 g of calcium?

Choices

Choice (4) Response

a.

0.5 mole

b.

0.375 mole

c.

0.25 mole

d.

0.125 mole

Question number: 86

» Chemistry » Structure of Atom

MCQ▾

Question

Which of the following represents 1?

Choices

Choice (4) Response

a.

Mass of C-12 atoms

b.

of mass of C-12 atoms

c.

Mass of 0 - 16 atoms

d.

Mass of H-atom

Question number: 87

» Chemistry » Structure of Atom

MCQ▾

Question

The chloride of a metal has the formula. The formula of its phosphate will be

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 88

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

A cell is kept in a solution for sometimes, when it bursts. The solution should be

Choices

Choice (4) Response

a.

Hypotonic

b.

Hypertonic

c.

Monotonic

d.

Isotonic

Question number: 89

» Chemistry » Carbon and Its Compounds

MCQ▾

Question

The gas supplied in cylinders for cooking is

Choices

Choice (4) Response

a.

Mixture of ethane and propane

b.

Marsh gas

c.

LPG

d.

Mixture of CH4 and C2H6

f Page
Sign In