User Forum

Which of the given statements about water cycle are correct?
(i) Water changes its state during the water cycle.
(ii) Heat of the Sun helps in the continuity of water cycle.
(iii) The two processes that enable the water cycle to repeat itself naturally are boiling and condensation.
(iv) The water cycle is the movement of water from the Earth to the sky and back to the Earth in a continuous way.

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

Read the given paragraph where few words have been italicised. Select the incorrect statement regarding it.
Teeth present in our mouth break food into smaller pieces. Each tooth is covered with a hard substance called enamel. Incisors are pointed teeth, used for grinding food into smaller pieces. Canines are chiselshaped teeth, used for piercing and tearing the food.
Premolars have flattened surface and there are six premolars in each jaw. Molars are used to grind food and each jaw has four molars.

AEnamel should not be replaced as it is mentioned correctly.
BThe positions of pointed and chisel-shaped should be interchanged.
CSix should be replaced by two and four should be replaced by eight.
DGrinding should be replaced by cutting and biting while piercing and tearing should not be replaced as it is mentioned correctly.

Refer to the given relationship.


ABalsam
BBean
COnion
DNeem

During the process of condensation, water in _________ state changes to ________ state.

ALiquid, solid
BLiquid, gaseous
CSolid, liquid
DGaseous, liquid

The given figure shows various parts of human digestive system labelled as I, II, III and IV. Identify the part that stores bile juice.


AI
BII
CIII
DIV

Oscillations are set in a simple pendulum whose length is 2 m and mass of the bob is 2 kg. Now, if mass of the bob becomes 4 kg then its time period

ARemains same.
BIncreases.
CDecreases.
DFirst increases then decreases.

Match the column I with column II and select the correct option from the given codes.

Read the given statements and select the correct option.
Statement I : The pole star appears to be stationary when viewed from the Earth.
Statement II : The pole star is present on the axis of rotation of the Earth.

ABoth statement I and statement II are correct.
BBoth statement I and statement II are incorrect.
CStatement I is correct and statement II is incorrect.
DStatement I is incorrect and statement II is correct.

Based on nutrients, select the option in which the odd one is encircled correctly.

AMeat, , Butter
B, Butter, Cheese
CPotato, , Bread
DBeetroot, , Red meat

10 to the 5^th power seconds is closest to the amount of time

AOf a full length movie.
BFor the Earth to rotate once.
COf an average human lifetime.
DSince humans first appeared on the Earth.