JEE Main Test 15

Result

JEE Main Test 15

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

A block of mass 0.50 kg is moving with a speed of 2.00 ms^-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

A
0.67 J

B
0.34 J

C
0.16 J

D
1.00 J

Solution

0.50 x 2 = 1.50 x v

Therefore, v = (2/3) m/s

Loss of energy = (1/2)(0.5 x 4 - 1.5 x (2/3)²)
= 0.67 J
Question 2
4 / -1

Two full turns of the circular scale of a screw gauge cover a distance of 1 mm on its main scale. The total number of divisions on the circular scale is 50. Further, it is found that the screw gauge has a zero error of -0.03 mm. While measuring the diameter of a thin wire, a student notes the main scale reading of 3 mm and the number of circular scale divisions in line with the main scale as 35. The diameter of the wire is

A
3.67 mm

B
3.38 mm

C
3.32 mm

D
3.73 mm

Solution

The total reading
= 3 mm + 35 × 0.01 = 3.35 mm
∴ the total reading (after correction)
= (3.35 + 0.03) mm = 3.38 mm.
Question 3
4 / -1

Which one of the following conformations of cyclohexane is chiral?

A
Chair

B
Boat

C
Twist boat

D
Rigid

Solution

Twisted boat is chiral as it does not have plane of symmetry.