User Forum

Match the columns and select the correct option.

Read the given experiment and answer the following questions.Paper pins are stuck to a metal rod with wax and a lighted candle is kept below the rod as shown in the diagram below.

Which one of the paper pins will fall off the metal rod first?

A P
B Q
C R
D S

Study the given relationship and select the option which satisfies the same relationship.


ATape grass : Water lily : Water lettuce
BWater lily : Tape grass : Water hyacinth
CWater hyacinth : Water lily : Tape grass
DWater lettuce : Water hyacinth : Water lily

Refer to the given dichotomous key.


AP could be fenugreek whereas Q could be corn or maize.
BR could be egg whereas S could be honey.
CR could be obtained from a flying insect whereas S could be obtained from both oviparous and viviparous animals.
DP could be turmeric or ginger whereas Q could be rice or lentils.

Manisha categorised living organisms on the basis of body covering. She made four groups of three organisms each. By mistake she placed one wrong member in each group. Identify the wrong member of each group and select the correct option.
Group I : Gecko, Python, Capybara
Group II : Mussel, Parakeet, Oyster
Group III : Dove, Sparrow, Hippopotamus
Group IV : Hedgehog, Porcupine, Tortoise

ACapybara of group I should be interchanged with oyster of group II.
BMussel of group II should be interchanged with porcupine of group IV.
CHippopotamus of group III should be interchanged with hedgehog of group IV.
DParakeet of group II should be replaced with clam.

Ritu has a toy puppy that can bark, jump, wag tail and move. Its eyes shine when patted. It is operated by a battery. Which of the following energy conversions do not take place in this puppy?

AChemical energy → Kinetic energy

BChemical energy → Sound energy

CChemical energy → Light energy

DChemical energy → Magnetic energy

When night becomes very cold, X freezes to form Y. What can be X and Y here?

----------- X--------Y
AHail--------Snow
BDew--------Frost
CFrost--------Dew
DSnow-------Hail

Which of the following options correctly represents the conditions present on land and water when a sea breeze flows?

---------On land-------------On water
AHigh pressure--------Low pressure
BHigh temperature----Low temperature
CLow pressure---------Low pressure
DLow temperature----High temperature

Complete the following paragraph by choosing the correct sequence of words.
We all need ____ to live. Clean water should not be ____. Plants need water to ____. Loss of water can cause a plant to ____.
A Air, Thrown, Wilt, Die
B Air, Drunk, Grow, Wilt
C Water, Wasted, Grow, Wilt
D Water, Wasted, Wilt, Die

Richa did an activity as shown below.

She observed bubbles coming out of the glass. What does this activity show?
A The empty glass is filled with air.
B Water displaces air in the glass.
C Air comes out of the water in the form of bubbles.
D All of these