Basic Concepts in Chemistry (NEET Chemistry): Questions 1 - 3 of 91

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Question number: 1

» Basic Concepts in Chemistry » Matter and Its Nature

MCQ▾

Question

Those which do not allow the flow of current through them are termed as?

Choices

Choice (4) Response

a.

Electrolyte

b.

Conductors

c.

Electrodes

d.

Insulators

Question number: 2

» 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: 3

» Basic Concepts in Chemistry » Molar Mass

MCQ▾

Question

Choose the correct statements

(1) If W1 gm of the element X combines with w2 gm of Cl then the equiv. wt. of X=W1W2×35.5

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

Divided silver or copper is precipitated then

Equiv.wt.ofZn/equ.WtofFeEquiv.wtofAg

(3) If W1 gm. of the element ‘X’ combines with w2 gm. of Cl then the equiv. wt. of X = w2w1×35.5

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

wtofAgwt.ofZn/WtofFe

Divided silver or copper is precipitated then Equiv.wt.ofZn/equ.WtofFeEquiv.wtofAg

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

Choices

Choice (4) Response

a.

1 and 3 are correct

b.

2 and 4 are correct

c.

1, 2 and 3 are correct

d.

1 and 2 are correct

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