CET SCIENCE QUIZ 1

The river deposit at the mouth of a river in a lake or ocean is called .

• alluvial fan

• delta

• sandbag

• valley

The main cause of tides is/are :

• the pull of inertia on the earth

• the pull of the moon and the sun on earth

• both of these

• none of these

Hydrogen and Helium remain in the atmosphere of a planet because

• there is gravity that holds them back

• they are almost the same

• they have high temperature

• all other gases have escaped

All of the following are important ores except :

• silver

• diamond

• gold

• iron

The condition which occurs when the atmosphere pressure is equal to the vapor pressure.

• melting

• boiling

• evaporation

• liquefaction

In a solution, the substance that does the dissolving is called .

• soluble

• the solute

• the solvent

• an ion

Water is a good solvent because .

• it is a negatively charged ion

• it repels most molecules

• it is such a small molecule

• of its polarity and small molecular size

A solution that cannot hold any more solute at room temperature would be .

• a dilute solution

• a concentrated solution

• a saturated solution

• a supersaturated solution

Which of the following is an example of a physical change?

• iron rusting

• a steak cooking

• sugar dissolving in water

• a candle burning

Which of the following is not a physical change?

• clothes drying in the dryer

• making a cup of coffee

• chopping wood

• boiling an egg