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Question Detail
Which instrument is used to determine the intensity of colours ?
- Cathetometer
- Chronometer
- Colorimeter
- Commutator
Answer: Option C
Explanation:
Cathetometer - is used to determine heights,
Chronometer - is used to longitude of a vessel at sea,
Commutator - is used to convert AC to DC.
1. What is unit of Viscosity ?
- coulomb
- newton second per square meter
- watt per meter per degree celcius
- joule per kilogram per Kelvin
Answer: Option B
Explanation:
coulomb is unit of Electric Charge,
watt per meter per degree celcius is unit of Thermal Conductivity,
joule per kilogram per Kelvin is unit of Specific Heat capacity.
2. If lift is going up with acceleration, the apparent weight of a body is
- may be more or less than true weight
- equal to the true weight
- less than the true weight
- more than the true weight
Answer: Option D
3. Alfred Nobel invented
- X ray
- Diesel Engine
- Dynamite
- Dynamo
Answer: Option C
Explanation:
Alfred Nobel if Sweden invented Dynamite in 1867,
X ray was invented by Wilhelm Roentgen of Germany in 1895,
Diesel Engine was invented by Rudolf Diesel of Germany 1892,
Dynamo was invented by Michael Faraday of England in 1831.
4. What is Hooke's Law ?
- Stress is inversely proportional to strain.
- Stress is directly proportional to strain.
- Stress and strain are dependent on each other.
- Stress and strain are independent of each other.
Answer: Option B
5. Alexander Graham Bell invented
- Telephone
- Telescope
- Television
- Tank
Answer: Option A
Explanation:
Alexander Graham Bell of USA invented Telephone in 1876,
Telescope was invented by Hans Lippershey of Netherlands in 1608,
Television was invented by John Logie Bared of Scotland in 1926,
Tank was invented by Sir Ernest Swington of England in 1914.
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