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Select the option that groups rocks of two different kinds as shown in the box.


ASlate :: Sandstone
BGneiss :: Shale
CLimestone :: Granite
DSlate :: Pumice

Which of the following is an Indian astronomer?

AAryabhata
BBhaskara I
CVarahamihira
DAll of these

Rajesh set up an experiment as shown in the figure.

He placed two cockroaches in both the jars X and Y. The cockroaches in jar X were given air and water. The cockroaches in jar Y were given air, water and food. From his experiment Rajesh was trying to find out ___.

AWhether the cockroaches need air to live
BWhether the cockroaches need food to live
CWhether the cockroaches need water to live
DWhether the cockroaches can live together in the dark

Read the given passage and select the option which correctly fill the blanks.
In __1___ season, sun shines brightly and days are very hot and sunny. We wear __2___ clothes. These keep our body __3___. We drink __4___ to keep ourselves fresh.

Select the incorrect match.
(i) Cotton - Retting
(ii) Jute - Ginning
(iii) Sliver - Combing
(iv) Spinning - Takli
(v) Knitting - Loom
(vi) Weaving - Charkha

A (i), (ii), (v) and (vi) only
B (iv), (v) and (vi) only
C (ii), (iii) and (v) only
D (iii), (iv) and (v) only

The house shown in given figure is favourable for which of the following areas?


A Areas with regular rainfall.
B Areas with hot and dry weather.
C Areas with heavy snowfall.
D Areas with drought conditions.

Jayesh placed 3 potted plants in an airtight glass tank as shown in the given diagram.

If he placed the set-up in a dark cupboard for a few hours, what would happen to the limewater, after a few hours?

AIt would turn dark blue.
BThere would be slightly less limewater left.
CIt would turn milky.
DThere would be no change.

Three students Ankit, Dinesh and Manoj were given three unknown substances X, Y and Z respectively during the lab activity.On the basis of these properties, which student has chosen the correct separation technique, to separate a substance from the substance water mixture?


AAnkit - Separating funnel
BDinesh - Distillation
CManoj - Fractional distillation
DAll are correct.

The given figure shows the longitudinal section of two flowers of the same type. Study the following statements with reference to the given figure.
(i) Z and U show self pollination, whereas Y shows cross pollination.
(ii) W, X and Z show transfer of pollen grains that will result in fruit formation.
(iii) Z shows self pollination, while X shows cross pollination.
(iv) X and Z show pollination that will result in fruit formation.
(v) W, X and Y show cross pollination.Which of the given statements are true or false?

A(i) and (iv) are true; (ii), (iii) and (v) are false.
BOnly (v) is true; rest are false.
C(i), (ii), (iii) and (v) are true; (iv) alone is false.
D(i), (ii) and (v) are false; (iii) and (iv) are true.

A scientist conducted a study on four different species of organisms (W, X, Y and Z) that are related in an aquatic food chain. He estimated the total number of individuals in the population of each species and the average biomass of each individual.


Which of the following shows the correct relation of these species in a food chain?

AZ → Y → W → X
BX → W → Z → Y
CX → W → Y → Z
DZ → W → X → Y