Email
Chat with tutors
Login
Ask Questions, Get Answers
Menu
X
home
ask
tuition
questions
practice
papers
mobile
tutors
pricing
X
Recent questions in JEEMAIN and NEET
Questions
>>
JEEMAIN and NEET
JEEMAIN and NEET
Mathematics
Physics
Chemistry
Biology
NEET PAST PAPERS
JEEMAIN PAST PAPERS
Two persons of equal height are carrying a long wooden beam of length l. They are at a distance $\frac{l}{4}$ and $\frac{l}{6}$ from the nearest end of the rod. The ratio of the normal reactions at their heads i s
jeemain
physics
class11
unit5
rotational-motion
equilibrium-of-rigid-bodies
medium
asked
Nov 27, 2013
by
meena.p
1
answer
A uniform rod of mass m and length L is suspended with two massless strings as shown. If the rod is at rest in a horizontal position, the ratio of the tensions in the two strings?
jeemain
physics
class11
unit5
rotational-motion
equilibrium-of-rigid-bodies
medium
asked
Nov 27, 2013
by
meena.p
1
answer
A uniform rod of length 5 m is placed against the wall as shown. If coefficient of friction $\mu$ is the same for both the walls, the minimum value for $\mu$ not to slip.
jeemain
physics
class11
unit5
rotational-motion
equilibrium-of-rigid-bodies
difficult
asked
Nov 27, 2013
by
meena.p
1
answer
Four equal and parallel forces are acting on a rod at distances of 20 cm, 40 cm, and80cm respectively , from one end of rod. Under the influence of these forces, the rod is
jeemain
physics
class11
unit5
rotational-motion
equilibrium-of-rigid-bodies
easy
asked
Nov 27, 2013
by
meena.p
1
answer
A light rod of length 1 m is pivoted at its centre and two masses 5 kg and 2 kg are hung from the ends as shown. In the above question if the rod has a mass 1 kg, then its initial angular acceleration
jeemain
physics
class11
unit5
rotational-motion
rotational-motion-about-a-fixed-axis
medium
asked
Nov 27, 2013
by
meena.p
1
answer
$Be^{2+}$ is isoelectronic with :
jeemain
chemistry
unit15
p-block-elements
q46
medium
asked
Nov 27, 2013
by
sreemathi.v
1
answer
Which of the following can be used as anaesthetic
jeemain
chemistry
unit15
p-block-elements
q45
medium
asked
Nov 27, 2013
by
sreemathi.v
1
answer
Quartz is a crystalline variety of
jeemain
chemistry
unit15
p-block-elements
q44
medium
asked
Nov 27, 2013
by
sreemathi.v
1
answer
Which one of the following element has highest first ionization potential?
jeemain
chemistry
unit15
p-block-elements
q43
medium
asked
Nov 27, 2013
by
sreemathi.v
1
answer
Which one of the following compounds in aqueous solution gives a white precipitate acid?
jeemain
chemistry
unit15
p-block-elements
q42
medium
sec-a
asked
Nov 27, 2013
by
sreemathi.v
1
answer
The no of $\pi$ bonds in the product formed by passing acetylene through dil $H_2SO_4$ containing mercuric sulphate
jeemain
chemistry
unit15
p-block-elements
q41
medium
asked
Nov 27, 2013
by
sreemathi.v
1
answer
Select among the following one with largest size
jeemain
chemistry
unit15
p-block-elements
q40
medium
asked
Nov 27, 2013
by
sreemathi.v
1
answer
Hg sticks to surface of glass when it reacts with
jeemain
chemistry
unit15
p-block-elements
q39
medium
asked
Nov 27, 2013
by
sreemathi.v
1
answer
A light rod of length 1 m is pivoted at its centre and two masses 5 kg and 2 kg are hung from the ends as shown. The critical angular acceleration of the rod if it is assumed to be massless is?
jeemain
physics
class11
unit5
rotational-motion
rotational-motion-about-a-fixed-axis
medium
asked
Nov 27, 2013
by
meena.p
1
answer
At a certain temperature, dissociation constant of formic acid and acetic acid are $1.8 \times 10^{-4}$ and $1.8 \times 10^{-5}$ respectively. At what concentration of acetic solution, the $H_3O^+$ ion concentration is same as that in 0.001 M fromic acid solution
jeemain
aipmt
chemistry
equilibrium
medium
q53
biology
asked
Nov 27, 2013
by
mosymeow_1
1
answer
The dissociation constants of four monobasic acids HA, HX, HY and HD are respectively $6 \times 10^{-4}, 5 \times 10^{-5}, 3.6 \times 10^{-6}, 7 \times 10^{-10}$. The $pH$ values of their 0.1 M aqueous solutions is
jeemain
aipmt
chemistry
equilibrium
medium
q52
biology
asked
Nov 27, 2013
by
mosymeow_1
1
answer
Bleaching action of $SO_2$ is due to
jeemain
chemistry
unit15
p-block-elements
q38
medium
asked
Nov 27, 2013
by
sreemathi.v
1
answer
Three sparingly solube salts $M_2V, MX and MX_3$ have same value of solubility product. Their solubilities follow the order
jeemain
aipmt
chemistry
equilibrium
difficult
q51
biology
asked
Nov 27, 2013
by
mosymeow_1
1
answer
If $K_1$ and $K_2$ are respective equilibrium constants of two reactions: $XeF_6 (g) + H_2O(g) \rightleftharpoons XeOF_4 (g) + 2HF(g)$ and $XeO_4 (g) + XeF_6(g) \rightleftharpoons XeOF_4 (g) + 2XeO_3F_2(g)$ Then equilibrium constant for the reaction $XeO_4(g) + 2HF(g) \rightleftharpoons XeO_3F_2(g) + H_2O(g)$ will be
jeemain
aipmt
chemistry
equilibrium
difficult
q50
biology
asked
Nov 27, 2013
by
mosymeow_1
1
answer
The $pH$ of a dilute solution of acetic acid was found to be 4.3. The addition of a small crystal of sodium acetate will cause $pH$ to
sat
chemistry
chemical-equilibrium
jeemain
aipmt
equilibrium
medium
q49
biology
asked
Nov 27, 2013
by
mosymeow_1
1
answer
$\rho H$ of water is 7.0 at 298 K. If water is heated to 350 K, which of the following should be true?
jeemain
aipmt
chemistry
equilibrium
medium
q48
biology
asked
Nov 27, 2013
by
mosymeow_1
1
answer
A uniform rod of length l is free to rotate in a vertical plane about a fixed horizontal axis through 0. The rod is allowed to rotate from its unstable vertical position. Then the angular velocity of the rod when it has turned through an angle $\theta$ is
jeemain
physics
class11
unit5
rotational-motion
rotational-motion-about-a-fixed-axis
medium
asked
Nov 27, 2013
by
meena.p
1
answer
A solution is obtained by mixing two solutions of same electrolyte with pH = 5 and pH = 3 respectively. The resulting solution has pH
jeemain
aipmt
chemistry
equilibrium
medium
q47
biology
asked
Nov 27, 2013
by
mosymeow_1
1
answer
The inert form of carbon is
jeemain
chemistry
unit15
p-block-elements
q37
medium
asked
Nov 27, 2013
by
sreemathi.v
1
answer
Acceleration of block $m_1$ is (given moment of inertia of pulley is I and string does not slip over the pulley )
jeemain
physics
class11
unit5
rotational-motion
rotational-motion-about-a-fixed-axis
medium
asked
Nov 27, 2013
by
meena.p
1
answer
A uniform rod of mass 20 kg and length 1.6 m is pivoted at its end and swings in the vertical plane. Angular acceleration of the rod just after the rod is released from rest in the horizontal position
jeemain
physics
class11
unit5
rotational-motion
rotational-motion-about-a-fixed-axis
medium
asked
Nov 27, 2013
by
meena.p
1
answer
The element that can exhibit highest number of oxidation state
jeemain
chemistry
unit15
p-block-elements
q36
medium
asked
Nov 27, 2013
by
sreemathi.v
1
answer
One end of a long uniform rod of mass m and length l is clamped. The rod lies on a smooth horizontal surface and rotates on it about the clamped end with a uniform angular velocity w. The force exerted by the clamp on the rod has a horizontal component.
jeemain
physics
class11
unit5
rotational-motion
rotational-motion-about-a-fixed-axis
medium
asked
Nov 27, 2013
by
meena.p
1
answer
The state of hybridization of Boron in $BCl_3$
jeemain
chemistry
class11
ch11
p-block-elements
q35
easy
group-13
boron-family
asked
Nov 27, 2013
by
sreemathi.v
1
answer
A uniform solid cylinder of mass M and radius R rotates about a frictionless axle. Two masses are suspended from a rope wrapped around the cylinder. If the system is released from rest, the tension in each rope is
jeemain
physics
class11
unit5
rotational-motion
rotational-motion-about-a-fixed-axis
medium
asked
Nov 27, 2013
by
meena.p
1
answer
A cylinder of mass M and radius R is fixed on a frictionless axle over a well. A rope of negotiable mass is wrapped around the cylinder . A bucket of mass m is suspended from it. The linear acceleration of the bucket will be
jeemain
physics
class11
unit5
rotational-motion
rotational-motion-about-a-fixed-axis
medium
asked
Nov 27, 2013
by
meena.p
1
answer
Refer the below Table :
jeemain
chemistry
unit15
p-block-elements
q34
medium
asked
Nov 27, 2013
by
sreemathi.v
1
answer
$Ca(OH)_2+Cl_2\rightarrow CaOCl_2+H_2O$.This reaction can be used in
jeemain
chemistry
unit15
p-block-elements
q33
medium
asked
Nov 27, 2013
by
sreemathi.v
1
answer
What are the shapes & hybridization of $SO_2$ & $SO_3$
jeemain
chemistry
unit15
p-block-elements
q32
medium
sec-a
asked
Nov 27, 2013
by
sreemathi.v
1
answer
$NCl_3+H_2O\rightarrow NH_3+x,PCl_3+3H_2O\rightarrow H_3PO_3+y$.The $x$ and $y$ are :-
jeemain
chemistry
unit15
p-block-elements
q31
medium
asked
Nov 27, 2013
by
sreemathi.v
1
answer
A body is rotating uniformly about a vertical axis fixed in an initial frame. The resultant force on a particle not on the the axis is
jeemain
physics
class11
unit5
rotational-motion
rotational-motion-about-a-fixed-axis
easy
asked
Nov 27, 2013
by
meena.p
0
answers
Oxydazation states of oxygen are :
jeemain
chemistry
unit15
p-block-elements
q30
easy
asked
Nov 27, 2013
by
sreemathi.v
1
answer
The correct sequence is : For -Acidic Nature
jeemain
chemistry
unit15
p-block-elements
q29
easy
asked
Nov 27, 2013
by
sreemathi.v
1
answer
$SF_6$ is more reactive than $TeF_6$.The above statement is
jeemain
chemistry
unit15
p-block-elements
q28
easy
asked
Nov 27, 2013
by
sreemathi.v
1
answer
Bleaching powder formulae
jeemain
chemistry
unit15
p-block-elements
q27
easy
sec-a
asked
Nov 27, 2013
by
sreemathi.v
1
answer
$IF_7$ hybridization
jeemain
chemistry
unit15
p-block-elements
q26
easy
asked
Nov 27, 2013
by
sreemathi.v
1
answer
$2NaOH+2F_2\rightarrow 2NaF+x+y$.$x$ & $y$ are
jeemain
chemistry
unit15
p-block-elements
q25
easy
asked
Nov 27, 2013
by
sreemathi.v
1
answer
$CO+Cl_2\overset{sun\;light}{\rightarrow}$$x$. $x$ is
jeemain
chemistry
unit15
p-block-elements
q24
easy
asked
Nov 27, 2013
by
sreemathi.v
1
answer
$CHCl_3$ is known as
jeemain
chemistry
unit15
p-block-elements
q23
easy
asked
Nov 27, 2013
by
sreemathi.v
1
answer
Structure of $HClO_4$ is
jeemain
chemistry
unit15
p-block-elements
q22
easy
asked
Nov 27, 2013
by
sreemathi.v
1
answer
Industrially chlorine is prepared
jeemain
chemistry
unit15
p-block-elements
q21
easy
asked
Nov 27, 2013
by
sreemathi.v
1
answer
AB and CD are two identical rods each of length l and mass m joined to form a cross. The moment of inertia of three two rods about a bisector XY of angles between the rods is
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
asked
Nov 27, 2013
by
meena.p
1
answer
Two particles of masses $m_1$ and $m_2$ are connected to a rigid massless rod of length r to constitute a dumb bell which is free to move in the plane. The moment of inertia of the dumb bell about an axis perpendicular to the plane passing through the centre of mass
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
medium
asked
Nov 26, 2013
by
meena.p
1
answer
Four spheres of diameter 2a and mass M are placed with their centres on the four corners of a square of side b. Then the moment of inertia of the system about an axis along one of the sides of the square is
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
medium
asked
Nov 26, 2013
by
meena.p
1
answer
A thin wire of length l and mass m is bent in the form of a semicircle as shown. Its moment of inertia about an axis joining its free ends will be
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
medium
asked
Nov 26, 2013
by
meena.p
1
answer
Page:
« prev
1
...
358
359
360
361
362
363
364
...
393
next »
Home
Ask
Tuition
Questions
Practice
Your payment for
is successful.
Continue
...