Basic Concepts in Chemistry [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Chemistry]: Questions 23 - 29 of 167

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Question 23

Question MCQ▾

How many significant figures are in each of the following numbers?

(1) (2) (3)

Choices

Choice (4)Response

a.

3,4, 3

b.

4,3, 2

c.

4,4, 4

d.

3,4, 1

Edit

Question 24

Question MCQ▾

Two elements X and Y have atomic weights of 14 and 16. They form a series of compounds A, B, C, D and E in which the same amount of element X, Y is present in the ratio 1: 2: 3: 4: 5. If the compound A has 28 parts by weight of X and 16 parts by weight of Y, then the compound of C will have 28 parts weight of X and

Choices

Choice (4)Response

a.

48 parts by weight of Y

b.

80 parts by weight of Y

c.

64 parts by weight of Y

d.

32 parts by weight of Y

Edit

Question 25

Question MCQ▾

How many grams of are required to neutralize

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 26

Question MCQ▾

Contains of water. The value of ‘n’ is?

Choices

Choice (4)Response

a.

10

b.

7

c.

1

d.

6

Edit

Question 27

Question MCQ▾

, is the SI unit of?

Choices

Choice (4)Response

a.

Volume

b.

Density

c.

Force

d.

Pressure

Edit

Question 28

Question MCQ▾

The most abundant element in earth՚s crust is?

Choices

Choice (4)Response

a.

Nitrogen

b.

Oxygen

c.

Silicon

d.

Hydrogen

Edit

Question 29

Question MCQ▾

The number of hydrogen atoms present in of sucrose which has a molar mass of is?

Choices

Choice (4)Response

a.

b.

c.

d.

Edit