NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 251 - 254 of 1258

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Question number: 251

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

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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.

H3BO3

b.

c.

d.

Question number: 252

» Basic Concepts in Chemistry » Empirical and Molecular Formulae

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MCQ▾

Question

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

Choices

Choice (4) Response

a.

40

b.

33.33

c.

19

d.

30

Question number: 253

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

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MCQ▾

Question

Which of the following bond is weaker among halogens?

Choices

Choice (4) Response

a.

F-F

b.

Br-Br

c.

I-I

d.

Cl-Cl

Question number: 254

» Basic Concepts in Chemistry » Molar Mass

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MCQ▾

Question

Choose the correct statements

(1) If W1 gm of the element X combines with w2 gm of then the equiv. wt. of

(2) If metallic zinc or iron be added to a solution of silver nitrate or copper sulphate, finely

Divided silver or copper is precipitated then

(3) If W1 gm. of the element ‘X’ combines with w2 gm. of then the equiv. wt. of X =

(4) If metallic zinc or iron be added to a solution of silver nitrate or copper sulphate, finely

Divided silver or copper is precipitated then

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1 and 3 are correct

b.

1,2 and 3 are correct

c.

1 and 2 are correct

d.

2 and 4 are correct