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Which of the following organism live in freshwater habitats?

AGold fish, water lilies and frogs
BHydrilla, whales, sharks and seal
CSea weeds, water lily and sea turtles
DHydrilla, oysters and blue whale

Rock X metamorphoses into Y. X and Y are _______ and _______ respectively.

ALimestone, Marble
BShale, State
CGranite, Quartzite
DBoth A and B

Select the option that correctly fills the blanks in any two of them.
The burning of (i) and (ii) results in the release of harmful pollutants into the air, which causes air pollution.
These pollutants lead to respiratory problems like (iii) in humans and contribute to the formation of (iv).
The increased concentration of gases like (v) contributes to the thinning of the (vi).

A (i) Coal, (ii) Petroleum
B (iii) Asthma, (iv) Global warming
C (v) Carbon dioxide, (vi) Ozone layer
D (ii) Sulphur dioxide, (vi) Nitrogen oxide

Observe the given figure carefully and select the correct option.


ACalcium sulphate and water are formed.
BEffervescence is observed in test tube containing lime water.
CThe test tube containing lime water becomes hot.
DBoth A and C

Refer to the given table and select the incorrect option regarding P-S.


A P can be cedar whereas S can be Hydrilla.
B Q can be cactus whereas S can be tape grass.
C P can be peepal tree whereas R can be larch tree.
D Q can be cactus whereas R can be Sundari tree.

Read the given statements and select the correct option.
Statement 1 : Less is the steepness of graph between distance and time, lesser will be the speed of the object.
Statement 2 : The slope of the distancetime graph gives the speed of the object.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true but statement 2 is false.
D Both statements 1 and 2 are false.

Identify X, Y and Z in the given graph showing percentage of different gases in air and select the incorrect statement regarding them.

Read the following statements, regarding X, Y and Z and select the correct ones.
(i) Z is a major contributor of global warming.
(ii) X is a life supporting gas.
(iii) Y could be used by plants to prepare food.
(iv) Z is oxygen which is used for burning.
(v) X is a major component of fertilisers.
(vi) Y is used to extinguish fire.

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

Read the given statements and select the option that correctly identifies them as true (T) and false (F) ones.
(i) Dietary fibres are the indigestible plant derived food that does not add any nutritional value.
(ii) Vitamins primarily helps in elimination of wastes out of our body in the form of urine and sweat.
(iii) Cereals contain relatively more protein than pulses.
(iv) Vitamin K helps in clotting of blood.
(v) Cooking on high heat may result lost of vitamin D.

Refer to the given processes of journey of food from farm to our plate.
K. Storage of grains
L. Food on our plate
M. Grinding of grains and packing
N. Growing of grains
O. Threshing and winnowing of grains
P. Transport to retail shop
Select the option that arrange processes (K - P) in correct order.

A K→P→M→O→L→N
B N→P→O→M→K→L
C N→O→P→K→M→L
D N→O→K→M→P→L

Refer to the given word grid and answer the following questions.

Unscramble the letters in the box to find names of biodegradable and nonbiodegradable wastes. How many of each category can you spot in the given word grid?
LOSTEHC, PRAPE, TCIPSAL, VLESAE, TMLEA, ARCIMCE