User Forum

Endoplasmic reticulum is a network of interconnecting membranous structures filled with fluid. Which of the following cells would most likely have high concentration of densely packed rough endoplasmic reticulum?

A A bioluminescent bacterial cell
B A functional phloem at maturity
C An amoeba engulfing small ciliates
D A pancreatic cell engaged in the production of digestive enzymes

Refer to the given diagrammatic representation of distribution of water on Earth and select the correct statements for X, Y and Z.

(i) X is a persistent body of dense ice that is constantly moving under its own weight.
(ii) Y is found below the water table and rainwater is its main source.
(iii) Z is an important source of water to the perennial rivers.

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

The diagram shows a ray of light reflected at a plane mirror.
Which pair of the angle of incidence and angle of reflection is correct?

Three glasses P, Q and R having equal amount of water were taken and equal amount of salt was added to each one of them. After that, P was cooled, Q was heated and R was left undisturbed. Water in which glass will now taste most salty?


AP
BQ
CR
DAll will taste the same.

A block of ice is sliding at a constant speed before moving up a smooth slope as shown in figure. Which of the following options is true about its energy as it is sliding up the slope?


A
B
C
D

Which of the following can be found in the given word grid?


AIt is the reducing phase of Moon from Full Moon to New Moon.
BIt is used to launch an artificial satellite into space.
CIt is the major gas that forms the Sun.
DIt is a force that holds the atmosphere around the Earth.

In the question below, two statements followed by two conclusions numbered I and II are given. You have to take the two given statements to be true even if they seem to be at variance of commonly known facts and decide which of the conclusion(s) logically follow(s) from the two given statements, disregarding commonly known facts.
Statements :Some books are papers. Some papers are notebooks.
Conclusions :
I. Some papers are books.
II. Some notebooks are papers.

AOnly conclusion I follows
BOnly conclusion II follows
CNeither I nor II follows
DBoth I and II follow

Fill in the blanks by choosing an appropriate option. The loudness of sound depends on its _(i)_ . The _(ii)_ determines the pitch of a sound. A bird makes a _(iii)_ sound where as a lion makes a _(iv)_ sound. Usually voice of a woman has a _(v)_ frequency than that of a man.