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Solve the given crossword and select the option which is not given in it.


AEasiest method to purify water at home.
BGas given out by plants during photosynthesis.
CMost abundant gas in air.
DInsoluble impurities can be separated by this method.

Sneha classified some materials as shown in the table

Select the option that correctly identifies headings W and X.

AW : Allows light to pass through easily, X : Does not allow light to pass through at all
BW : Non magnetic, X : Magnetic
CW : Does not conduct electricity, X : Conducts electricity easily
DW : Colourless, X : Coloured

The given figure shows primary and secondary rainbows.
Which one of the following options correctly lists the colours of marked rays?

Refer to the given dichotomous key regarding cell organelles.

Identify the cell organelles P, Q, R, S and T and select the correct statement regarding them.

AP can be endoplasmic reticulum and Q can be Golgi apparatus.
BR can be chloroplast and S can be ribosomes.
CP can be nucleus and T can be ribosomes.
DR can be mitochondria and S can be lysosomes.

Wool required for making woollen socks, gloves, jackets, etc. is obtained from

A
B
C
DAll of these.

A child is sitting on a plank attached to a thick steel pillar which is turning at a constant rate in anticlockwise sense as shown in the given figure.
Which option correctly states and explains the direction of friction acting on the child at a given instant?


ATowards P, to counter centripetal force.
BTowards Q, to counter centripetal force.
CTowards Q, to provide centripetal force.
DTowards P, to provide centripetal force.

Select the correct statements.
(i) Tremors that follow massive earthquakes are called aftershocks.
(ii) Mt. Etna is a dormant volcano.
(iii) Earthquake is measured on the Vernier scale.
(iv) Breaking of dam can cause floods.

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

Identify X in the given pie chart of composition of air and select the option that correctly fills the following blank.

X component of atmospheric air helps in _______.
(i) Maintaining water cycle of the environment
(ii) Respiration
(iii) Photosynthesis
(iv) Extinguishing fire
(v) Formation of fog
(vi) Burning of candles

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

Refer to the given classification chart where plants have been classified based on plant parts from which they propagate vegetatively.

Select the option that correctly identifies the plants that can be placed at X, Y and Z respectively.

ADahlia, Zamikand, Kalanchoe
BMint, Tapioca, Onion
CGarlic, Colocasia, Water hyacinth
DAsparagus, Begonia, Ginger

Which of the following statements are incorrect?
I. Some metals react with acids to give off carbon dioxide gas.
II. Hydrogen turns lime water milky.
III. Zinc carbonate contains zinc and carbon only.
IV. Sour milk contains malic acid.

AI and III only
BII and IV only
CII and III only
DI, II, III and IV