NEET Chemistry: Questions 247 - 253 of 941

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 941 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: 247

» P-Block Elements Group 13 to 18 » Group 14 » Allotropes of Carbon

MCQ▾

Question

Fire extinguishers contain a bottle of sulphuric acid and?

Choices

Choice (4) Response

a.

NaHCO3

b.

CaCO3

c.

MgCO3

d.

Any carbonate

Question number: 248

» P-Block Elements Group 13 to 18 » Group 15 » Nitrogen

MCQ▾

Question

Ammonia will be obtained in?

Choices

Choice (4) Response

a.

CaCN2+3H2O

b.

NH4H2PO4

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Question number: 249

» P-Block Elements Group 13 to 18 » Group 13 » Boron

MCQ▾

Question

Orthoboric acid behaves as weak monobasic acid giving H3O+ and?

Choices

Choice (4) Response

a.

H2BO2

b.

H2BO2+

c.

[B(OH)4]

d.

[B(OH)4]+

Question number: 250

» P-Block Elements Group 13 to 18 » Group 14 » Allotropes of Carbon

MCQ▾

Question

Graphite is good conductor of electricity because it contains?

Choices

Choice (4) Response

a.

Strong C = C bonds

b.

Strong C-C bonds

c.

Bonded electrons

d.

Mobile electrons

Question number: 251

» P-Block Elements Group 13 to 18 » Group 13 » Boron

MCQ▾

Question

A mixture of ethyl alcohol and boric acid burns with green edged flame due to the formation of?

Choices

Choice (4) Response

a.

B(OH)3

b.

B2O3

c.

H3BO3

d.

B(OC2H5)3

Question number: 252

» Basic Concepts in Chemistry » Empirical and Molecular Formulae

MCQ▾

Question

5.70 gm of metal carbonate was dissolved in 50ml of 2 (N) HCL . The excess acid was neutralized by 10 ml of 1 (N) NaCl . What is the equivalent wt. of metal?

Choices

Choice (4) Response

a.

19

b.

30

c.

33.33

d.

40

Question number: 253

» P-Block Elements Group 13 to 18 » Group 17 » Introduction

MCQ▾

Question

Which of the following bond is weaker among halogens?

Choices

Choice (4) Response

a.

Cl-Cl

b.

Br-Br

c.

F-F

d.

I-I

Sign In