Time Left - 01:00:00 mins
JEE 2020: Weekly Quiz 14 (28.07.2019)
Attempt now to get your rank among 235 students!
Question 1
Question 2
Question 3
Question 4
is a polynomial of degree
Question 5
If , then
Question 6
is equal to
Question 7
The value of is
Question 8
is equal to
Question 9
is equal to
Question 10
If , then
Question 11
Which transition involves maximum amount of energy
Question 12
IE(I) and IE(II) of Mg are 178 and 348 kcalmol-1. The energy required for the reaction Mg → Mg2+ + 2e– is :
Question 13
The electron affinity of a hypothetical element ‘A’ is 3 eV per atom. How much energy in kcal is released when 10g of ‘A’ is completely converted to A¯ ion in a gaseous state?
(1 eV per atom = 23 kcal mol–1, Molar mass of A = 30 g)
Question 14
The ionization potential of X– ion is numerically equal to :
Question 15
Which of the following order is wrong?
Question 16
Which of the following reasons explains the fact that the electron affinity of fluorine is less than chlorine?
Question 17
For a molecule Br2, total distance between two nuclei is 3.2 Å. What will be the co-valent radius of Br atom?
Question 18
The hypothetical complex chlorodiaquatriammine cobalt(III) chloride can be represented as:
Question 19
Which one of the following will give maximum number of isomers?
Question 20
Which of the following statements are true according to postulates of Werner’s theory?
Question 21
One end of a rod of length L=1 m is fixed to a point on the circumference of a wheel of radius m. The other end is sliding freely along a straight channel passing through the center O of the wheel as shown in the figure below. The wheel is rotating with a constant angular velocity ω about O.
The speed of the sliding end P when is
The speed of the sliding end P when is
Question 22
In vertical circular motion, the ratio of kinetic energy of a particle at highest point to that at lowest point is
Question 23
A plank is resting on a horizontal ground in the northern hemisphere of the Earth at a 45 latitude. Let the angular speed of the Earth be and its radius . The magnitude of the frictional force on the plank will be
Question 24
A force is applied on a block of mass 5kg along the fixed smooth incline as shown in figure. Here gravitational acceleration . The acceleration of the block is
Question 25
A block A of mass 4 kg is placed on another block B of mass 5 kg, and the block B rests on a smooth horizontal table. If the maximum force that can be applied on A so that both the blocks move together is 12 N, the maximum force that can be applied on B for the blocks to move together will be:
Question 26
A ball of mass suspended from a rigid support by an inextendible massless string is released from a height above its lowest point. At its lowest point it collides elasctically with a block of mass 2 at rest on a frictionless surface. Neglect the dimensions of the ball and the block. After the collision the ball rises to a maximum height of
Question 27
The X and Y components of a force F acting at 30 º to x-axis are respectively
Question 28
Two bodies of masses m1 and m2 are acted upon by a constant force F for a time t. They start from rest and acquire kinetic energies E1 and E2 respectively. Then is
Question 29
A truck accelerates from spped v to 2v. Work done in during this is
Question 30
If the potential energy of a gas molecule is being positive constants, then the potential energy at equilibrium must be
- 235 attempts
- 13 upvotes
- 6 comments
Tags :
Mar 1JEE & BITSAT