Environmental Chemistry Water Test 01

Total Questions: 25

1 - Which one of the following properties of water is responsible for rising of water in plants?

A ) Specific heat capacity
B ) Surface tension ✅
C ) excellent solvent action
D ) capillary action

2 - Water dissolves non-ionic compound by:

A ) ion-ion forces
B ) ion- dipole forces
C ) dipole-dipole forces
D ) hydrogen bonding ✅

3 - Temporary hardness is removed by adding:

A ) quick lime
B ) slaked lime ✅
C ) limestone
D ) soda lime

4 - Permanent hardness is removed by adding:

A ) Na2zeolite ✅
B ) soda lime
C ) lime water
D ) quick lime

5 - Rapid growth of algae in water bodies is because of detergent having:

A ) carbonate salts
B ) sulphuric acid dalts
C ) sulphate salts
D ) phosphate salts ✅

6 - Depletion of O2 from water is not because of:

A ) decaying of aquatic plants
B ) biodegradation of aquatic plants
C ) rapid growth of aquatic plants ✅
D ) decomposition of aquatic plants

7 - Which one of the following diseases causes liver inflammation?

A ) typhoid
B ) jaundice
C ) cholera
D ) hepatitis ✅

8 - Which one of the following diseases causes serve diarrhea and can be fatal?

A ) jaundice
B ) dysentery
C ) Cholera ✅
D ) Typhoid

10 - A diseases that causes bone and tooth damage is:

A ) fluorosis ✅
B ) hepatitis
C ) cholera
D ) jaundice

11 - Ionic compounds are soluble in water due to:

A ) hydrogen bonding
B ) ion- dipole forces ✅
C ) dipole-dipole forces
D ) dipole-induced dipole forces

12 - The chemicals used to kill or control pests are called pesticides. They are:

A ) dangerous inorganic chemicals
B ) dangerous organic chemicals ✅
C ) beneficial inorganic chemicals
D ) beneficial organic chemicals

14 - The freezing point of water is:

A ) 10°C
B ) 100°C
C ) 0°C ✅
D ) 46°C

15 - The percentage of water in human body is:

A ) 40%
B ) 50%
C ) 60%
D ) 70% ✅

16 - What percentage of world water exist as ocean?

A ) 50%
B ) 67%
C ) 97% ✅
D ) 25%

17 - Inland water includes:

A ) River
B ) Lakes
C ) Stream
D ) All of these

18 - Sea water is unfit for drinking purpose due to the percentage of:

A ) salts ✅
B ) algae
C ) dishes
D ) all of these

19 - Water has a maximum density at:

A ) 10°C
B ) 0°C
C ) 4°C ✅
D ) 100°C

20 - Maximum density of water at 4°C:

A ) 12 gcm-³
B ) 2gcm-³
C ) 1gcm-³ ✅
D ) 4gcm-³

22 - Which of the following salt is double in water?

A ) NaCl
B ) KCI
C ) Na2SO4
D ) all of these

23 - Which of the following is insoluble in water?

A ) benzene ✅
B ) NaCl
C ) KCI
D ) all of these

25 - Water molecules show structure:

A ) tetrahedral ✅
B ) trigonal
C ) pentagonal
D ) linear