Basic Concepts in Chemistry-Concept of Atom, Molecule, Element and Compound [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Chemistry]: Questions 7 - 14 of 20
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Question 7
Question MCQ▾
A symbol not only represents the name of the element but also its?
Choices
Choice (4) | Response | |
---|---|---|
a. | Atomicity | |
b. | Atomic mass | |
c. | Atomic volume | |
d. | Atomic number |
Question 8
Question MCQ▾
The equivalent mass of an element is 4. it՚s chloride has valency of element is?
Choices
Choice (4) | Response | |
---|---|---|
a. | 2 | |
b. | 4 | |
c. | 1 | |
d. | 3 |
Question 9
Question MCQ▾
Common salt obtained from sea – water contains 95% mass. The approximate number of molecular present in salt is?
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 10
Question 11
Question MCQ▾
The credit for the discovery of transuranic element goes to?
Choices
Choice (4) | Response | |
---|---|---|
a. | Hahn | |
b. | Seaborg | |
c. | Rutherford | |
d. | Curie |
Question 12
Question MCQ▾
Caffeine has a molecular weight of If it contains by mass of nitrogen, number of atoms of nitrogen in one molecule of caffeine is?
Choices
Choice (4) | Response | |
---|---|---|
a. | 6 | |
b. | 4 | |
c. | 3 | |
d. | 2 |
Question 13
Question MCQ▾
Which one of the following phrases would be incorrect to use?
Choices
Choice (4) | Response | |
---|---|---|
a. | A mole of a compound | |
b. | An atom of an element | |
c. | An atom of a compound | |
d. | A mole of an element |
Question 14
Question MCQ▾
Which one of the following is not a compound?
Choices
Choice (4) | Response | |
---|---|---|
a. | Marble | |
b. | Carborundum | |
c. | Quicklime | |
d. | Ozone |