User Forum

The graph below shows the number of days in each stage of the life cycle of an animal X.

Which of the following statements is/are true regarding its life cycle?

AIt takes 20 days for the animal X to become an adult after it is hatched.
BAdult has a life span of 8 days.
CPupa does not feed, hence it is of the shortest time span.
DAll of the above

____________ is a food preservation technique in which excess of salt and oil is added in food unlike _________ where excess of sugar is added.

A Pickling, Canning
B Pickling, Jellying
C Drying, Freezing
D Freezing, Pickling

Two flies P and Q revolve around a light in concentric circular paths. The radius of circular path of P is twice of Q. P travels with a uniform linear speed of 4 m/s while Q travels with a uniform linear speed of 3 m/s. When P completes three full rounds, then Q would have completed

A4 rounds
B3 rounds
C2 rounds
D1 round.

Read the given statements and select the correct option.
Statement 1: Naphthalene balls kept in woollen clothes reduce in size after sometime.
Statement 2: Solid naphthalene balls change into gas due to the warmth of woollen clothes.

ABoth statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
CStatement 1 is correct but statement 2 is incorrect.
DBoth statements 1 and 2 are incorrect.

Refer to the given set-up. Beakers X and Y contain equal amounts of water at different temperatures. The water in both the beakers was then poured into the trough. Which of the following is most likely to be the temperature of water in trough after an hour?


A80°C
B90°C
C130°C
D< 80°C

Refer to the given dichotomous key and answer the following questions.

Select the correct match of tissue and its location.

AP-Wall of Bowman's capsule S-Epidermal covering of legume seeds
BQ-Blubber of whale R-Covering of nuts
CR-Petiole of lotus U-Hump of camel
DQ-In subcutaneous tissue T-Stele or vascular cylinder of monocot root

Which of the following figures will complete the given figure matrix?


A
B
C
D

The instrument used to detect both the direction of flow of current and its magnitude in a circuit is

AAmmeter
BSpeedometer
CVoltmeter
DGalvanometer

Refer to the given flow chart and select the correct option regarding P, Q, R and S.



APlant P derives nutrition from the host plant with the help of haustoria and possesses hygroscopic roots which absorb moisture directly from atmosphere.
BPlant Q possesses broad thin leaves with superficial stomata.
CPlant R possesses special leaf modifications to catch and digest insects.
DPlant S possesses stilt roots which help in aeration.

Which of the following are not the examples of circular motion?
(i) Windmill
(ii) Movement of a spinning top
(iii) A train moving on a curved bridge
(iv) Rotation of Earth around the Sun
(v) A battalion moving in a parade

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