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Which of the following statements about a solid is incorrect?

AThe particles in a solid vibrate about fixed positions.
BThere is very little space between the particles in a solid.
CThe particles in a solid can move around freely.
DThere are usually strong forces between the particles in a solid.

A place 'X' receives heavy rainfall but only during a particular season. For the rest of the year, the area remains very dry. What would you suggest to the citizens living in 'X' do to make sure the water remains available throughout the year?

A Reduce the wildlife
B Construct more wells
C Start harvesting rainwater
D Reduce the mining activities in the area

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

Now study the given relationship P :: R :: Q and select the option that correctly satisfies the same relationship.

A Dahlia :: Zamikand :: Water hyacinth
B Turmeric :: Tapioca :: Onion
C Garlic :: Colocasia :: Kalanchoe
D Asparagus :: Begonia :: Ginger

Which of the following will NOT be a consequence of reduction or removal of forest cover?

AWeather will be affected as summers will be more hot and winters will be excessively cold.
BThere will be more floods.
CThere will be more overgrazing by a large live stock population.
DLand slides will occur bringing damages to local population.

Which of the following shows a pleasant sound?

A
B
C
D

Position of five elements P, Q, R, S and T is shown on the simplified form of the periodic table.

The element which has maximum tendency to lose electron, the element which has maximum tendency to gain electrons and the element which has no tendency to gain or lose electrons are respectively

A P, R and S
B S, R and T
C Q, S and P
D Q, R and T.

Mrs. Nitika, a science teacher has collected few fuel samples in different glass jars and put labels on them with their calorific values (in kJ/kg).

She asked her students to arrange these fuels in the increasing order of fuel efficiency. The correct order is

A4 < 2 < 3 < 1
B1 < 3 < 2 < 4
C2 < 4 < 1 < 3
D3 < 1 < 4 < 2

The given figure represents the pattern of blood circulation in human body.

Select the incorrect statement regarding this.

AQ and P carry oxygenated blood whereas R and S carry deoxygenated blood.
BY represents right side of the heart, i.e., right atrium and right ventricle.
CP and S carry oxygenated blood whereas Q and R carry deoxygenated blood.
DX represents left side of the heart, i.e., left atrium and left ventricle.

A large forest area was destroyed by forest fire and remained without any vegetation for a long time. It finally got converted to a desert. Which of the following graphs correctly depicts the changes in various parameters of that area over a period of time from the point of deforestation to desertification ?


A
B
C
D