The term ‘Squirrel Cage’ is associated with
- Pressure gauges
- Internal combustion engines
- Potentiometers
- Electric motors
The phenomenon of increase in the temperature of the earth’s atmosphere due to the absorption of the infra-red radiations reflected from the earth’s surface is called-
- Tsunami
- Solar heating
- Green-house effect
- Seismic effect
Why is it recommended that people should not use charcoal or gas stoves in closed rooms?
- The electrical wiring in the room may catch fire
- The stoves will get extinguished
- It can cause carbon monoxide poisoning
- The stoves may burst
The most effective way to improve safety in a vast organization like the Indian Railways is to-
- Ignore small acts of negligence by the staff
- Carry out frequent checks
- Educate the staff at all levels
- Punish defaulting staff
The density of water is maximum at
- 100°C
- 0°C
- -273°C
- 4°C
Which one of the following quantities does not have a unit?
- Velocity
- Density
- Specific Gravity
- Mass
Read More ⇒ Important Synonyms for Competitive Exams
A Swimmer finds it easier to swim in seawater than in plain water. Why?
- Seawater has less contamination
- Sea waves help a swimmer to swim
- Seawater has a higher density than plain water
- Sea has a much higher volume of water
Humidity refers to-
- Both temperature and moisture contents of the air
- The temperature of the air
- The moisture content of the air
- The pressure of the air
Boyle’s law states that-
- Volume is directly proportional to temperature
- Pressure is inversely proportional to temperature
- Pressure is directly proportional to temperature
- Pressure is inversely proportional to volume
The Purity of milk is confirmed by-
- Barometer
- Lactometer
- Altimeter
- Gyroscope