Questions
Water harvesting is done to
- save rainwater
- increase the level of groundwater
- recycle the polluted water
- Both (1) and (2)
Which of the following activities help(s) in saving maximum amount of water?
- Using sprinklers to water large gardens
- Washing of cars in car wash garages
- Using the pool water for cleaning purposes
- Both (1) and (3)
Open wells are mainly fed by
- rainwater
- groundwater
- oceans
- Both (1) and (2)
Which of the following statements is true?
- Water vapour is present in the atmosphere only during the monsoon.
- Water evaporates into the atmosphere from the oceans, rivers and lakes, but not from the soil.
- The process of water changing into its vapour is called evaporation.
- The evaporation of water takes place only in sunlight.
Recycling of water can be best explained by which of the following slogans?
- Refuse, renew, reduce
- Catch it where it falls.
- Don't let animals bathe in it.
- Water the plants so they can purify water.
Which of the following activities involve the use of water?
A. Washing clothes
B. Bathing
C. Cleaning utensils
D. Drying wet clothes
E. Cleaning bike
- A, B, C, D, E
- A, B, D
- A, B, C, E
- A, C, E
In which of the following situations does evaporation occur?
- Water drops appearing on the outer surface of a glass containing cold water
- Fog appearing on a cold winter morning
- Steam rising from wet clothes while they are ironed
- Blackboard drying up after being wiped
- Both 1 and 2
- Both 3 and 4
- Both 1 and 3
- Both 1 and 4
By which of the following processes does water go in the atmosphere to form clouds?
a. Condensation
b. Evaporation
c. Transpiration
- Only a
- Both a and b
- Only c
- Both b and c
In which of the following activities will you use the minimum amount of water?
- Watering plants twice a day with a pipe
- Cleaning cars with a wet cloth
- Washing the porch daily
- Changing the water of the pools daily
The water we see on plants on a spring morning is due to
- rain
- groundwater
- respiration by plants
- transpiration by plants
The quantity of water required to produce 8 pages of a book is
- 16 glasses
- 10 glasses
- 8 glasses
- 6 glasses
Which of the following statements is/are true?
- Excessive rains may cause floods.
- No rainfall for a year or more may lead to drought in a region.
- Steam rising from a hot girdle when water is sprinkled on it is due to evaporation.
- Only 1
- 2 and 3
- 1, 2 and 3
- Only 2
Transpiration involves the
- loss of water from the leaves of plants
- loss of nutrients from the stems of plants
- filtration of water from the surface of the leaves of plants
- accumulation of water
Heavy rainfall causes extensive damage to
a. crops
b. property and human life
c. domestic animals
d. health
- a, b and d
- a, b and c
- b, c and d
- a, c and d
Which of the following statements is/are true?
- Salt is not carried by the water vapour of seawater during evaporation.
- Heat is an essential condition for vapourisation.
- Fog appearing on a cold winter morning is due to condensation.
- Only 1
- 1 and 3
- Only 2
- 1, 2 and 3