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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

IIT JEE Mains Online Test Series 2020 - FREE

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IIT JEE Mains Online Test Series 2020 - FREE

All Levels English

IIT Entrance Class 12 (PCM)
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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

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

A

alcohol

B

ether

C

aldehyde

D

alkene

NEET/Medical Class 12 (PCB)
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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

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

NEET/Medical Class 12 (PCB)
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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

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

NEET/Medical Class 12 (PCB)
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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

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

NEET/Medical Class 12 (PCB)
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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

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

IIT Entrance Class 12 (PCM)
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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

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 :

NEET 2020 Online Test Series

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All Levels English

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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

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

IIT Entrance Class 12 (PCM)
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731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

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

IIT Entrance Class 12 (PCM)
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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

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 tha...

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A

E / 4

B

E / 16

C

E / 32

D

E / 64

IIT Entrance Class 12 (PCM)
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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

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

IIT Entrance Class 12 (PCM)
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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

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

IIT Entrance Class 12 (PCM)
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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

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

NEET/Medical Class 12 (PCB)
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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

Dettol is an example of :

A

Antiseptic

B

Antimalarial

C

Sedative

D

Antifertility drug

NEET/Medical Class 12 (PCB)
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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

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

NEET/Medical Class 12 (PCB)
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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

The polymer having strongest intermolecular forces is

A

Fibres

B

Elastomer

C

Thermoplastic

D

Thermosetting polymer

NEET/Medical Class 12 (PCB)
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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

Enzyme are :

A

Proteins

B

Minerals

C

Oils

D

Fatty acids

NEET/Medical Class 12 (PCB)
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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

The element that does NOT show catenation is:

A

Sn

B

Ge

C

Si

D

Pb

IIT Entrance Class 12 (PCM)
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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

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.

IIT Entrance Class 12 (PCM)
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V PLUS U
731 followers study24x7 01 Jan 1970 05:30 AM study24x7 study24x7

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

IIT Entrance Class 12 (PCM)
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