he temperature at which ice, water and vapour remain in equilibrium is called?
(A) freezing point
(B) triple point
(C) critical temperature
(D) boiling point
The technical term for this is the triple point of water since at this temperature, not only solid ice and liquid water, but also water vapor coexist. The temperature and pressure conditions that allow a substance's gaseous, liquid, and solid phases to exist in equilibrium is called triple point of the substance.
The application of low-temperature engines is?
(A) submarine propulsion
(B) research on superconductivity
(C) rocket technology
(D) frost free refrigerators
The colour of the sky appears to be blue.
(A) due to diffraction
(B) due to scattering
(C) due to reflection
(D) due to refraction
What is the reason for the spherical shape of a liquid drop?
(A) Viscosity
(B) Light Load
(C) Surface Tension
(D) Atmospheric Pressure
The working principle of the washing machine is?
(A) Sub-Centre
(B) Diffusion
(C) Centrifugation
(D) Dialysis
Which of the following particle is not related to the nucleus of an atom?
(A) Electron
(B) Proton
(C) Neutron
(D) Meron
Thus, among the subatomic particles, electrons are not a part of the nucleus.
Why don't birds feel shortness of breath while flying at high altitudes?
(A) Their lungs are very large
(B) They fly passively
(C) They have additional air sacs
(D) They use less oxygen
Because flying takes a tremendous amount of energy, birds need to get lots of oxygen. The air sacs in their lungs help them to keep fresh air flowing in, unlike mammals, where the “old” air within the trachea and mouth (which has low oxygen content and high CO2 levels) in inhaled each time.
Who was the first President of India to fly for 30 minutes in a Sukhoi fighter aircraft of the Indian Air Force?
(A) A P J Abdul Kalam
(B) Mrs. Pratibha Patil
(C) K. R. Narayan
(D) Dr. Shankar Lal Sharma
In order to slide a huge box lying on the ground in her room, Reshma should apply a force which is greater than which of the following forces?
(A) Static friction
(B) Gravitational force
(C) Normal force
(D) Muscular force
So, In order to slide a huge box lying on the ground in her room, Reshma should apply a force greater than the Static friction.
Where will it take more time to cook rice?
(A) on the beach
(B) in Shimla
(C) Mount Everest
(D) at the depth of the sea
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