NSTSE (National Science Talent Search Exam- Unified Council) Class 6: Questions 1910 - 1917 of 2029
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Question number: 1910
Question
The efficiency of an ideal machine is:
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 100 % | |
b. | 80 % | |
c. | 90 % | |
d. | 92 % | |
Question number: 1911
Question
In which of the following class of lever fulcrum is in middle?
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Class III | |
b. | Not Mentioned | |
c. | Class II | |
d. | Class I | |
Question number: 1912
Question
If the efficiency of a machine is , Mechanical Advantage is 5 and load is then calculate the effort
Choices
| Choice (4) | Response | |
|---|---|---|
a. |
| |
b. |
| |
c. |
| |
d. |
| |
Question number: 1913
» Chemistry » Separation of Substances
Question
The property of magnetic poles to rest at a given direction is known as ________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Directive property | |
b. | Repulsion | |
c. | Magnetic poles | |
d. | Magnetic property | |
Question number: 1914
» Chemistry » Separation of Substances
Question
The property by which iron ore attracts iron is known as
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Directive property | |
b. | Magnetism | |
c. | Magnetic force | |
d. | Repulsion | |
Question number: 1915
Question
Efficiency of an ideal machine such as lever, pulley or gear train is:
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Equals to 100% | |
b. | More than 100% | |
c. | More than 50% | |
d. | Less than 100% | |
Question number: 1916
» Chemistry » Changes Around Us
Question
Exchange of energy is in change.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Physical | |
b. | Reversible | |
c. | Chemical | |
d. | Question does not provide sufficient data or is vague | |
Question number: 1917
Question
The new substance formed after chemical change is.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Reactant | |
b. | New substance | |
c. | Product | |
d. | None of the above | |