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A floor has a maximum loading capacity of 5 kN m^-2. Which of the following is allowed on this floor? (Take g = 10 N kg^-1)

AAn elephant weighing 50 kN stands on 4 legs with each foot covering 4000 cm² of the floor.
BA 50 kg lady wears a pair of high heel shoes, each shoe has a contact area of 9 cm² with the floor.
CA 100 kg washing machine stands on a surface area of 6500 cm².
DA designer's table weighing 1000 N stands on 3 legs, each leg has a contact area of 0.1 cm² with the floor.

Which of the following best shows the revolutions of Earth and Moon around Sun and Earth respectively?

A
B
C
D

The given graph shows measurements of different types of blood vessels P, Q and R. Select the incorrect statement regarding these vessels.


ABlood vessels of type P have valves.
BBlood vessels of type Q distribute blood from the heart to different parts of the body.
CR represents a capillary which forms an artery and it has thick walls.
DAll of these

The given diagram shows a prism whose one surface is reflecting. Now consider different angles given in column I and corresponding values in column II. Match column I with column II and select the correct option from the given codes.



AP - (i), Q - (ii), R - (iii), S - (iv)
BP - (ii), Q - (i), R - (iii), S - (iv)
CP - (i), Q - (iv), R - (ii), S - (iii)
DP - (ii), Q - (iv), R - (i), S - (iii)

The given figure shows layers of Earth. Select the correct statement regarding it.


AP and Q are liquid layers.
BLayer above R is called crust.
CLayer S makes up most of the total Earth’s volume.
DAll of these

Different types of sheets are placed between Nisha, Sahil, Ankit and Ruby.
Sheets Q and S allow light to pass through them. Sheets P and R are opaque. Select the incorrect statement among the following.


A Nisha cannot see Sahil.
B Sahil can see Ankit.
C If sheet S is removed then Ruby cannot see Ankit.
D Ankit can see Nisha.

Study the given table carefully and select the correct option.


A Only air, paper and steel are listed incorrectly.
B Only paper is listed incorrectly.
C Only air, butter paper and wood are listed incorrectly.
D Only glass, water and iron are listed incorrectly.

Greenhouse gases cause global warming. Which of the following is a greenhouse gas?

AOxygen
BNitrogen
CCarbon dioxide
DMagnesium oxide

Which of the following mirrors is/are used in solar cooker?

APlane mirrors
BConcave mirrors
CConvex mirrors
DBoth A and B

A stream of electrons is projected horizontally to the left. A straight current carrying conductor is supported parallel to the electron stream and above it. If the current in the conductor is flowing from left to right then, what will be the effect on the electron stream ?

AThe stream of electrons will be pulled upwards.
BThe stream of electrons will be pushed downwards.
CThe stream of electrons will be retarded.
DThe stream of electrons will speed up towards the right.