A. rises
B. falls
C. falls then rises
D. remains unaltered
✅ The correct answer is option A.
what happens when a ship enters a Sea from a river ?
A. It rises
B. It remains at the same level
C. sinks a little
D. None of the above
✅ The correct answer is option A.
A transition from the solid to gas phase with no intermediate liquid stage is called?
A. Evaporation
B. Sublimation
C. Adsorption
D. Solid Phase extraction
✅ The correct answer is option B.
Which among the following works while we wipe with a towel.?
A. evaporation
B. osmosis
C. capillary action
D. surface tension
✅ The correct answer is option C.
If water is heated , it vapor pressure will ______?
A. Increase
B. decrease
C. first increase and then decrease
D. nothing happens to vapor pressure
✅ The correct answer is option A.
When two mercury drops are brought into contact they form a single bigger drop to get which of the following?
A. Minimum volume
B. Minimum surface area
C. Maximum size
D. Maximum surface area
✅ The correct answer is option B.
On a smooth glass surface , the drop of water spreads while the drop of mercury remains almost spherical. This proves that ________?
A. Cohesive forces of mercury is more than adhesive forces with glass
B. Cohesive force of water is less than cohesive forces of mercury
C. mercury is a metal
D. 1 & 2
✅ The correct answer is option A.
Which of the following causes the drop of water to be in spherical shape?
A. Viscosity
B. Air resistance
C. Surface tension
D. Temperature
✅ The correct answer is option C.
kalpana-1 was first exclusive satellite built by ISRO in which of the following satellite systems?
A. INSAT
B. METSAT
C. GSAT
D. EDUSAT
✅ The correct answer is option B.
First Indian Satellite Aryabhatta was launched in which year ?
A. 1970
B. 1972
C. 1975
D. 1980
✅ The correct answer is option C.