Basic Concepts in Chemistry-Mole Concept (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry): Questions 1 - 4 of 18
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Question number: 1
» Basic Concepts in Chemistry » Mole Concept
Question
Assertion (Ꭺ)
Equivalent weight of in is 31.8 and in is 63.6.
Reason (Ꭱ)
Equivalent weight of an element
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ | |
b. | Both Ꭺ and Ꭱ are false | |
c. | Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ | |
d. | Ꭺ is true but Ꭱ is false | |
Question number: 2
» Basic Concepts in Chemistry » Mole Concept
Question
Assertion (Ꭺ)
As mole is the basic chemical unit, the concentration of the dissolved solute is usually specified in terms of number of moles of solute.
Reason (Ꭱ)
The total number of molecules of reactants involved in a balanced chemical equation is known as molecularity of the reaction.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ | |
b. | Both Ꭺ and Ꭱ are false | |
c. | Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ | |
d. | Ꭺ is true but Ꭱ is false | |
Question number: 3
» Basic Concepts in Chemistry » Mole Concept
Question
In the final answer of the expression . The number of significant figures is
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 4 | |
b. | 3 | |
c. | 2 | |
d. | 1 | |
Question number: 4
» Basic Concepts in Chemistry » Mole Concept
Question
Assertion (Ꭺ)
1.231 has three significant figures.
Reason (Ꭱ)
All numbers right to the decimal point are significant.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ | |
b. | Ꭺ is true but Ꭱ is false | |
c. | Both Ꭺ and Ꭱ are false | |
d. | Ꭺ is false but Ꭱ is true | |