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Science Test - 6
Read Instructions for the test.
Negative marks are -0.33 per wrong answer
Right answer is 1 mark
No time limit but finish in 30 mins
Solution can be found at below chapters:
Test series is based on following chapters.
Science Chapter 8: Water
Science Chapter 9: Environment
Q1:World water day is on
Q2: International year of freshwater observed on
Q3: International decade for action on WATER FOR LIFE is from.
Q4: Which Properties of Water are true ?
Water has high boiling point, high freezing point, high heat of vaporization
high heat of fusion [controls body temperature]
specific heat [leads to moderation of temperature of climate],
Q5:Amphoteric means properties of.
Q6: Temporary hardness of water is due to
calcium hydrogen carbonates.
magnesium hydrogen carbonates
Q7:Amongst the type of decay this is the fastest
A and B
Q8: Temporary hardness can be removed by
removed by boiling
addition of lime
Q9: Permanent hardness is due to presence of
Magnesium chlorides and sulphates
calcium chlorides and sulphates
Q10:Permanent hardness is treated using
Q11: Underground water resources where water is stored between rock layers are called.
Q12:During fires we must wrap a woolen blanket over a burning object to
stop the burns
seals the injuries
cutoff supply of air to it
Q13:Hydrogen peroxide is used
treating industrial effluents
Q14: Which trees should be planted along sewage lines as these absorb wastewater and release water vapor into the atmosphere.
Q15:Which is true
soil moisture>water vapor>rivers
ground water>lakes>saline lakes and seas
Q16: Canopy of trees are useful as
they provide shade
they absorb more sunlight
they reduce load on stem
they block rain from hitting ground directly
Q17: The part of a leaf by which it is attached to the stem is
Q18: Net like venation of leaves is also called
Q19:Which is the tissue in plants for transportation of water and minerals.
Q20: What is true regarding photosynthesis
Leaves prepare food using carbon dioxide and water and food produced is stored in form of starch
Amount of oxygen released during photosynthesis is much higher than the CO2 that is released during night time.
Q21: Leaves take in CO2 from atmosphere through pores present on surface called
Q22: A bacteria that converts atmospheric nitrogen into soluble form which is absorbed by the leguminous plants
Q23:Which are nitrogen fixers
Blue green algae
Q24: Nitrate poisoning of ground water causes
Q25:What is obtained from Poppy plant
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