User Forum

Fill in the blanks with the most appropriate option.
‘W’ is a very reactive metal, reacts vigorously with oxygen and water therefore, stored in (1) . ‘X’ is a non-metal, soft and dull and, forms (2) oxides with oxygen. ‘Y’ is very reactive (3) , catches fire if exposed to air, therefore, stored in water. ‘Z’ does not react with dilute hydrochloric acid even on heating but it reacts with sulphuric acid. When it is exposed to moist air for long, it acquires a dull (4) coating.

A1-Water, 2-Basic, 3-Metal, 4-Reddish brown
B1-Kerosene, 2-Acidic, 3-Metal, 4-Red
C1-Kerosene, 2-Acidic, 3-Non-metal, 4-Green
D1-Water, 2-Basic, 3-Non-metal, 4-Green

Match column I with column II and select the correct option.


Aa-(1), b-(2), c-(3), d-(4)
Ba-(3), b-(2), c-(4), d-(1)
Ca-(1), b-(2), c-(4), d-(3)
Da-(4), b-(2), c-(1), d-(3)

Low atmospheric pressure exists on the earth in which of the following latitudes?

A At the equator only
B At 30° N and S
C At the poles
D At the equator and at 60° N and S.

Read the following statements.


A

B

C

D

Which among these on unscrambling gives the name of a disease that affects the skin if it is exposed to ultraviolet rays?

A RECACN
B ARIAMAL
C EBIRRBIE
D SEIBAR

The second Full Moon in a month is called _____.

A Gibbous Moon
B White Moon
C Blue Moon
D Crescent Moon

The given pie chart depicts the percentage population of five animals in a grassland ecosystem that are related to each other in a food chain. If heavy pesticides are sprayed on plants in this area then select the option that correctly depicts the ascending order of pesticide concentration in living tissues of animals at different trophic levels.


A P < Q < R < S < T
B T < S < R < Q < P
C R < T < P < Q < S
D S < T < R < Q < P

Refer to the given flow chart.

Which of the following is/are correctly placed?

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

628 is ________ more than the quotient of 1467 and 3.

A 139
B 146
C 151
D 167