Chemistry Annual Exam Revisional Assignment

Acids turn ____ litmus to _____.

• red to blue

• blue to red

• blue to blue

• red to green

What is sewage?

• wastewater

• pollutants

• contaminants

• liquid waste

The black-brown oily and lathery water goes down to drains from homes, office etc. is called

• sewage

• wastewater

• sewerage

• pure water

The countries that do not get sufficient water for household purposes are generally poor.

• True

• False

WWTP is also known as STTP.

• True

• False

What is sludge?

• solid waste

• liquid waste

• sewage

• dry manure

What is the atomic number of Potassium (K)?

• 15

• 17

• 19

• 20

Smallest unit of matter is known as

• Electrons

• Protons

• Neutrons

• Atom

Which of the following is NOT the steps involved in water cycle.

• Condensation

• Transpiration

• Evaporation

• Infiltration

The upper level where all the pores in the soil and gaps between the rocks re filled with water is called

• Groundwater

• Water Table

• Aquifers

• Infiltration