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Atomic Structure - Set 1

Home
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NUST Entrance Test
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Chemistry
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Atomic Structure

Set 1

MM

Mashaal Masha

Oct 16, 2022

On this page

$The e/m value for positive rays is maximum for:$
$The nature of positive rays depend on:$
$Which of the following was discovered first:$
$Which of the following particles has longest wavelength, if they have same speed:$
$Maximum potential energy that an electron can have within the atom is:$
$Charge to mass ratio of electrons was discovered by:$
$When an electric current is passed through discharge tube at low pressure, cathode rays are emitted from cathode these rays consist of:$
$Charge of an electron is:$
$Mass of simple electron is:$
$The charge over mass ratio of electron is:$

Choose the correct options for the following questions.

The e/m value for positive rays is maximum for:

Difficulty: Easy

A:

Oxygen

B:

Nitrogen

C:

Helium

D:

Hydrogen

The nature of positive rays depend on:

Difficulty: Easy

A:

Nature of discharge tube

B:

Nature of resident rays

C:

Maximum potential energy that an electron can have within the atom is:

D:

All of above

Which of the following was discovered first:

Difficulty: Easy

A:

Charge to mass ratio of electrons

B:

Mass of electron

C:

Charge of electron

D:

All of above at same time

Which of the following particles has longest wavelength, if they have same speed:

Difficulty: Easy

A:

Proton

B:

Neutron

C:

Electron

D:

Positron

Maximum potential energy that an electron can have within the atom is:

Difficulty: Easy

A:

Equal to zero

B:

Less than zero

C:

Greater than zero

D:

Infinite

Charge to mass ratio of electrons was discovered by:

Difficulty: Easy

A:

Milikan

B:

Rutherford

C:

J.J Thomson

D:

Chadwick

When an electric current is passed through discharge tube at low pressure, cathode rays are emitted from cathode these rays consist of:

Difficulty: Easy

A:

Alpha rays

B:

Negative particles

C:

Electromagnetic rays

D:

Positive particles

Charge of an electron is:

Difficulty: Easy

A:

$1.6\times 10^{-19}$ C

B:

$9.1\times 10^{-34}$ C

C:

$1.7588\times 10^{11}$ C

D:

$6.62\times 10^{-43}$ C

Mass of simple electron is:

Difficulty: Easy

A:

$9.1\times 10^{31}$ kg

B:

$9.1\times 10^{-30}$ kg

C:

$1.66\times 10^{-31}$ kg

D:

$9.1\times 10^{-31}$ kg

The charge over mass ratio of electron is:

Difficulty: Easy

A:

$1.6\times 10^{-1}$ C kg^{-1}

B:

$9.1\times 10^{-31}$ C kg^{-1}

C:

$1.7588\times 10^{11}$ C kg^{-1}

D:

$6.62\times 10^{-34}$ C kg^{-1}