# If an astronaut travels from the earth to the moon

1.  His mass and weight will both change

2.  Neither his mass nor his weight will change

3.  Only his mass will change

4.  Only his weight will change

4

Only his weight will change

Explanation :
No Explanation available for this question

# A young boy on a parachute is falling at a Constant speed. What sort of energy change takes place

1.  Gravitational to internal

2.  Kinetic to gravitational

3.  Gravitational to kinetic

4.  Heat to kinetic

4

Gravitational to kinetic

Explanation :
No Explanation available for this question

# The quantity of heat which crosses unit area of a metal plate during conduction depends upon the:

1.  Specific gravity of the metal plate

2.  Temperature gradient perpendicular to the area

3.  Temperature to which the metal is heated

4.  Density of the metal plate

4

Temperature gradient perpendicular to the area

Explanation :
No Explanation available for this question

# Two blocks of ice when pressed together, join to form one block, because

1.  Of cold produced during pressure

2.  Of heat produced during pressure

3.  Melting point of ice decreases with increase in pressure

4.  Melting point of ice increases with increase in pressure

4

Melting point of ice decreases with increase in pressure

Explanation :
No Explanation available for this question

# Some quantity of tap water is placed in an open pan and allowed to evaporate. After sometime the temperature of the water will:

1.  Decrease slightly

2.  Increase slightly

3.  Remain the same

4.  Increase considerably

4

Decrease slightly

Explanation :
No Explanation available for this question

# An invar tape is made of an alloy of

1.  Copper and steel

2.  Brass and nickel

3.  Brass and steel

4.  Nickel and steel

4

Nickel and steel

Explanation :
No Explanation available for this question

# The drop manholes are generally provided in sewers for

1.  Industrial areas

2.  Large townships

3.  Hilly townships

4.  Cities in plains

4

Hilly townships

Explanation :
No Explanation available for this question

# How many dead centers are there in one complete cycle of an external combustion engine (steam engine)

1.  One

2.  Two

3.  Three

4.  Four

4

Two

Explanation :
No Explanation available for this question

# The process of regulating the temperature, the humidity, purity and circulation of air is called

1.  Condensation

2.  Refrigeration

3.   Evaporation

4.  Air conditioning

4

Air conditioning

Explanation :
No Explanation available for this question

# The ratio of the refractive index of red light to violet light is

1.  Less than unity

2.  Equal to unity

3.  Greater than unity

4.  Dependent on the experimental arrangement

4