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IIT/Engineering NEET/Medical Class 8 Class 9 ...
Courses

Physics Online Test Series for NTSE

by V PLUS U
  • 64 Enrollments
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Free

NEET 2020 Online Test Series

by V PLUS U
  • 43 Enrollments
  • Validity Unlimited
Free

Revision batch for Physics (12th class)

by V PLUS U
  • 28 Enrollments
  • Validity 5 month,27 days
Free

IIT JEE Mains Online Test Series 2020 - FREE

by V PLUS U
  • 57 Enrollments
  • Validity Unlimited
Free

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57 Learners

IIT JEE Mains Online Test Series 2020 - FREE

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An alkoxide ion will react with an alkyl halide to form what type of compound?

A

alcohol

B

ether

C

aldehyde

D

alkene

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Which one of the following nitrates will leave behind a metal on strong heating?

A

Copper nitrate

B

Manganese nitrate

C

Silver nitrate

D

Ferric nitrate

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When p-character of hybridised orbital (formed by s and p orbitals) increases. Then the bond angle

A

Decreases

B

Increases

C

Becomes twice

D

Remains unaltered

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Nitrogen gas was collected over water at a temperature of 40°C, and the pressure of the sample was measured at 796 mm Hg. If the vapour pressure of water at 40°C is 55 mm Hg, what is the partial pressure of the nitrogen gas?

A

55 mm Hg

B

741 mm Hg

C

756 mmHg

D

796 mm Hg

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All possible numbers are formed using the digits 1, 1, 2, 2, 2, 2, 3, 4, 4 taken all at a time. The number of such numbers in which the odd digits occupy even places is :

A

175

B

162

C

160

D

180

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NEET 2020 Online Test Series

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Two particles A and B having equal charges +6 C, after being accelerated through the same potential difference, enter in a region of uniform magnetic field and describe circular paths of radii 2 cm and 3 cm respectively. The ratio of mass of A to that of B is :

A

4/9

B

9/5

C

1/2

D

1/3

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To which of the following quantities, the radius of the circular path of a charged particle moving at right angles to a uniform magnetic field is directly proportional ?

A

energy of the particle

B

magnetic field

C

charge of the particle

D

momentum of the particle

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A rocket has to be launched from earth in such a way that it never returns. If E is the minimum energy delivered by the rocket launcher, what should be the minimum energy that the launcher should have if the same rocket is to be launched from the surface of the moon ? Assume that the density of the...

A

E / 4

B

E / 16

C

E / 32

D

E / 64

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The element with Z = 120 (not yet discovered) will be an/a :

A

transition metal

B

inner-transition metal

C

alkaline earth metal

D

alkali metal

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Glucose and Galactose are having identical configuration in all the positions except position.

A

C–3

B

C–2

C

C–4

D

C–5

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Identify the incorrect statement from the following:

A

Oxides of nitrogen in the atmosphere can cause the depletion of ozone layer

B

Ozone absorbs the intense ultraviolet radiation of the sun.

C

Depletion of ozone layer is because of its chemical reactions with chlorofluoro alkanes.

D

Ozone absorbs infrared radiation

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Dettol is an example of :

A

Antiseptic

B

Antimalarial

C

Sedative

D

Antifertility drug

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If the ratio of the rates of diffusion of the two gases A & B is 4 : 1, the ratio of their densities is :-

A

1 : 16

B

1 : 4

C

1 : 8

D

1 : 2

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The polymer having strongest intermolecular forces is

A

Fibres

B

Elastomer

C

Thermoplastic

D

Thermosetting polymer

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Enzyme are :

A

Proteins

B

Minerals

C

Oils

D

Fatty acids

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The element that does NOT show catenation is:

A

Sn

B

Ge

C

Si

D

Pb

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The correct statement is :

A

zincite is a carbonate ore.

B

aniline is a froth stabilizer.

C

zone refining process is used for the refining of titanium.

D

sodium cyanide cannot be used in the metallurgy of silver.

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The first electron affinity of C, N and O will be of the order

A

C < N < O

B

N < C < O

C

C < O < N

D

O < N < C

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