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Which of the items above will allow you to see around a corner from where you are standing?

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

An athlete completes half round of a circular track of radius R, then the displacement and distance covered by the athlete are, respectively ________.

A 2R and πR
B πR and 2R
C R and 2πR
D 2πR and R.

Refer to the given flow chart and identify P-S.

Now, select the option that correctly represents X and Y shown in the given figures.

An object is released from a height h. At a certain height, its kinetic energy is (³⁄₅)^th of its potential energy. The speed of the particle at that instant is

A
B
C
D

The given bar graph shows the respiratory quotient (RQ) of three food substrates P, Q and R. Identify the food substrates and select the correct option regarding them.


A Sportsperson should consume food rich in R for gaining instant energy.
B A person recovering from surgery should consume food rich in Q.
C Animals inhabiting cold regions possess thick deposit of P under their skin.
D All of these

Chalk is used for writing on blackboards because

AIt is a soft rock
BIt is made up of sandstone
CIt is a hard rock
DIt is made up of silica.

The distance time graph of two persons X and Y in a 100 m race are depicted in the given figure.

Then, select the incorrect statement(s).
(i) X and Y are at maximum distance to each other in the time duration 8-10 s.
(ii) The maximum distance between X and Y is more than 20 m.
(iii) The average speed of X is greater than that of Y.

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

Three students of class 6 suggested the methods to separate the given types of mixtures.
Anushka : A heterogeneous solid-liquid mixture in which solid is lighter than liquid can be separated by filtration.
Jay : A heterogeneous solid-solid mixture containing one water soluble component can be separated by sedimentation-decantation followed by condensation.
Kriti : A heterogeneous liquid-liquid mixture can be separated by crystallisation.
The method(s) given by which of them is/are correct?

AJay only
BJay and Kriti only
CAnushka and Kriti only
DAnushka only

Study the given flow chart and identify the objects W, X, Y and Z.

Refer to the given Venn diagram and select the option that correctly identifies animals W, X, Y and Z.