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 |
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 |
Question 25
Question 26
Question 27
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 |
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. |