Read the given statements and select the correct option.
Statement 1: Many cut fruits, when kept in open turn brown.
Statement 2: Browning of fruits is due to a chemical reaction.
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 and statement 2 is false.
D Both statements 1 and 2 are false.
A ship is made of iron but still it floats in water. This is
because of its shape. A ship is hollow in the middle. When
it is in water, the entire volume of the ship, including the
hollow portion displaces water to make space for itself. The
volume of water displaced is much more than the volume
of iron in the ship. Therefore, the ship floats in water.
Which of these rules can be deduced from the above given passage?
A If the upthrust is more than the weight, the body sinks in water.
B If the weight is more than the upthrust, the body floats in water.
C If the upthrust is less than the weight, the body floats in water.
D If the weight is more than the upthrust, the body sinks in water.
The heart is made up of muscle tissue. However, the
tissue in the heart is different from the tissue in the
leg. Infer the reason for the difference.
A The heart must beat all the time, so its tissue should be able to contract and relax continuously without getting tired.
B The leg is much larger than the heart, so the tissue in the leg muscle needs to contain larger cells.
C A person can voluntarily control contraction of heart muscles but not leg muscles.
D The heart muscle is surrounded by blood vessels, so the blood makes it look different from the leg muscle.
Refer the given three plants P, Q and R.
Which of the following is a suitable statement for the given plants?
(A) P and R produce food, while Q does not
(B) P and Q produce oxygen, while R does not
(C) P is a shrub, Q is a herb, while R is a tree
(D) Leaves of P and Q show parallel venation, while that of R shows reticulate venation
Banana shows reticulated venation
The force required to start an object sliding across a uniform horizontal surface is larger than the force required to keep the object sliding at a constant velocity. The magnitudes of the required forces are different in these situations because the force of kinetic friction
AIs greater than the force of static friction.
BIs less than the force of static friction.
CIncreases as the speed of the object relative to the surface increases.
DDecreases as the speed of the object relative to the surface increases.
Which of the following is a common character among the given animals?
A They all respire by gills.
B They all have streamlined body.
C They all lay eggs.
D They all have slippery scales over body.
Which of the following diagrams shows the correct wind flow pattern because of uneven heating of the earth?
Yes, the correct answer is A but the direction of winds in the polar region is given quite small and is not visible properly. The order is equator i.e. 0 degree, 30 degree North and South, 60 degree North and South and the poles i.e. 90 degree.
The fur of some animals becomes thicker in the winter and is shed in the spring. These
observations show how animals
A Respond to changes in the environment
B Move from place to place to survive
C Store fat for the winter
D Compete with other animals for food.
Select the option that correctly identifies the given species as extinct (P), critically endangered (Q) and vulnerable (R) according to IUCN Red List.
|A||Asiatic wild ass||Indian gazelle||Lion tailed macaque|
|B||Dodo||One horned rhinoceros||Chinkara deer|
|C||Passenger pigeon||Ivory-billed woodpecker||Bare-faced curassow|
|D||Silvery pigeon||Blackbuck||Red panda|