User Forum

In a car race, car A takes 2 s less than car B and passes the finishing point with a velocity v more than the velocity with which car B passes the point. Both the cars start from rest and travel with constant accelerations of a_A = 3 m s^–2 and a_B = 2 m s^–2. The value of v is

A 2.45 m s^–1
B 4.90 m s^–1
C 7.35 m s^–1
D 9.80 m s^–1

Which of the following represents the given Venn diagram?


APets, Cats, Dogs
BHuman beings, Males, Pens
CBricks, Walls, Houses
DFemales, Mothers, Unmarried people

Which of the following is rich in proteins?

A
B
C
D

Mint is a _____.

ABush
BHerb
CShrub
DTree

Refer to the given list of few aquatic plants.
(i) Water lily (ii) Duckweed
(iii) Hydrilla (iv) Lotus
(v) Pistia (vi) Tape grass
How many among them are completely submerged aquatic plants?

A2
B3
C4
D5

Study the given diagram that shows arrangement of four magnets.

Which of the following is a possible arrangement of two of these magnets?

A
B
C
D

Select a figure from the options which satisfies the same conditions of placement of the dots as in the given figure.


A
B
C
D

An electric circuit is given below.

Study the circuit and explain why all the bulbs did not light up when the switch (S) was closed?
I. The metal tip of bulb B₁ was not connected.
II. Bulb B₂ and the alloy metal key closed the electric circuit.
III. The plastic disposable spoon was not an electrical conductor.
IV. Bulbs B₁ and B₃ were incorrectly positioned in the electric circuit.

AI only
BIII only
CI, II and IV only
DI, III and IV only

Two identical metal spheres P and Q are placed in contact with each other and are supported on insulating stands. When a negatively charged ebonite rod is brought near P, what kind of charges will develop on P and Q?

AP-Positive; Q-Negative
BP-Negative; Q-Positive
CP-Negative; Q-Negative
DP-Positive; Q-Positive

Unscramble the letters given in the box to get the name of a bird and select the correct option regarding this bbird.


AIt has a strong, sharp and hooked beak.
BIt has holes on either side of its beak.
CIt has very sharp claws called talons.
DIt uses its feet to hold on to tree branches and sit on them.