User Forum

Refer to the given pie chart showing nutrients P, Q, R and S present in different foods and identify the correct statements regarding them.

(i) Food rich in P is taken by sportspersons which provides them with instant energy and it turns blue-black in colour on adding iodine solution.
(ii) S helps in retaining water in the body and maintains healthy bowel movement.
(iii) S is important for growth and repair of body tissues thus, required in more amount in person recovering from accident injuries.
(iv) R forms antibodies in the body and its deficiency causes marasmus characterised by dry and rough hair, swollen stomach and mental retardation in children.
(v) Food sample containing Q turns into purple or violet colour when treated with 2 drops of copper sulphate and sodium hydroxide solution.

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

Study the given Venn diagram carefully.

Centre point represents

ACondensation
BFreezing
CMelting
DBoth A and B.

Five friends ate some dishes in the lunch as shown in the given table.

Refer to the given table and select the option that correctly answers the following questions.
(A) Who among them had a balanced meal?
(B) Who among them ate only body building food?
(C) Who among them ate only protective food?
A-----B-----C

AMonica---Arhan---Gauri
BArhan---Manav---Hitesh
CMonica---Hitesh---Arhan
DHitesh---Arhan---Manav

Select the option that correctly identifies the given species as extinct (X), critically endangered (Y) and vulnerable (Z) according to IUCN Red List.
X-----Y-----Z

ALion-tailed macaque---Asiatic wild ass---Pygmy hog
BDodo---Indian rhinoceros---Chinkara
CPassenger pigeon---Ivory-billed woodpecker---Bare-faced curassow
DBlackbuck---Silvery pigeon---Red panda

Read the given statements regarding friction and select the correct ones.
(i) Friction may cause moving objects to slow down.
(ii) A rough surface offers greater friction than a smooth surface.
(iii) Friction makes it easy to slide heavy objects across the floor.
(iv) Friction always acts in the opposite direction of motion of objects.

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

If we see New Moon on Day 1 of a calendar month, then what will we see on Day 21 of the same calendar month?

A
B
C
D

Select the option that arranges these means of transports from oldest to latest, based on the time in which they first came into use.

ATrain, Bullet train, Bullock cart
BPalanquin, Tram, Metro train
CBullock cart, Truck, Palanquin
DBullet train, Train, Metro train

Consider a 3 V cell, it is connected across two uniform resistance wires PQ and RS of resistance 1 Ω and 2 Ω respectively. Length of PQ is 3 cm and length of RS is 6 cm.

A voltmeter with one end fixed at point P and the other end connected to a jockey (J) slides from point R to point S. Which of the following diagrams represents reading of the voltmeter (V) as the jockey (J) slides? (x is the length from R to J.) (A voltmeter measures voltage and it allows almost no current to pass through it.)

A
B
C
D

The food prepared by the leaves is used by the plants for their daily activities. The excess food gets stored as starch in ______.

ARoots
BStems
CFruits
DAll of these

Read the given statements.
• X causes high tides and low tides on Earth.
• X has a temperature around 127°C during the day time.
• X is responsible for Solar Eclipse.
Identify heavenly body X and select the correct statement regarding it.

AThe gravity of X is 1/6^th of the Earth's gravity.
BThe rotation period of X is 24 hours.
CLight from X takes 8 minutes 20 seconds to reach Earth.
DBoth B and C