User Forum

Refer to the given figure and select the correct option.



AJoint X is similar to joint Y whereas joint W is similar to joint Z.
BJoints U and V are fixed joints where bones do not show movement.
CJoints Y and Z allow movement in only one plane, i.e., either back and forth or up and down.
DNone of these

Match the given chemical reactions with the products listed in the box and select the correct option from the given codes.


P. Mixing magnesium oxide with water
Q. Brown deposit on iron nail kept in copper sulphate solution
R. Carbon dioxide is passed through lime water
S. Absorption of ultraviolet radiations by ozone.

AP-(v), Q-(vii), R-(i), S-(vi)
BP-(iv), Q-(ii), R-(i), S-(iii)
CP-(ii), Q-(iii), R-(viii), S-(vii)
DP-(ii), Q-(iv), R-(viii), S-(vi)

Priyanka sprayed 2 pieces of bread with water and put each into a plastic bag. She sealed the bags tightly. Then she put one bag into the freezer and the other was left on a table near the kitchen window. 5 days later, she took the bag out of the freezer and compared it to the one on the table. The given figure shows what she saw.

Which of the following was Priyanka trying to find out ?

AMould requires air to grow.
BMould requires dryness to grow.
CMould requires water to grow.
DMould requires warmth to grow.

The given figure shows a heavy block of mass M kept on a frictionless surface and being pulled by two ropes of equal mass m. At t = 5 s, the force on the left rope is withdrawn but the force on the right end continues to act. Find the magnitude of the force by the right rope on the block.


A
B
C
D

Number of birds on the tree are _____________.


A4
B5
C3
D2

Vijay puts some water into four cups made of steel, porcelain, glass, frosted glass. Which one of these cups will allow him to see the level of the water clearly?

AGlass cup
BSteel cup
CPorcelain cup
DFrosted glass cup

Study the given table carefully and select the incorrect statement(s).

I. S and T are cations.
II. R is the lightest element while U is the heaviest element.
III. P is a noble gas.
IV. Q and U are anions.

AII only
BI and IV only
CI, III and IV only
DIII and IV only

Find the water-image of the given combination of letters and numbers.


A
B
C
D

Which of the following statements is correct?

AThe Sun appears to rise in the West and set in the East.
BThe Sun appears to be highest in the sky at dawn.
CDay and night are caused by revolution of Earth in its orbit.
DDuring Full Moon, the entire lit side of the Moon is visible from the Earth.

Find the minimum number of straight lines required to draw the given figure.


A15
B16
C17
D18