NEET  >  Chemistry Class 11  >  Test: Electromagnetic Radiations Download as PDF

Test: Electromagnetic Radiations


Test Description

16 Questions MCQ Test Chemistry Class 11 | Test: Electromagnetic Radiations

Test: Electromagnetic Radiations for NEET 2022 is part of Chemistry Class 11 preparation. The Test: Electromagnetic Radiations questions and answers have been prepared according to the NEET exam syllabus.The Test: Electromagnetic Radiations MCQs are made for NEET 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Electromagnetic Radiations below.
Solutions of Test: Electromagnetic Radiations questions in English are available as part of our Chemistry Class 11 for NEET & Test: Electromagnetic Radiations solutions in Hindi for Chemistry Class 11 course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Test: Electromagnetic Radiations | 16 questions in 16 minutes | Mock test for NEET preparation | Free important questions MCQ to study Chemistry Class 11 for NEET Exam | Download free PDF with solutions
1 Crore+ students have signed up on EduRev. Have you?
Test: Electromagnetic Radiations - Question 1

Direction (Q. Nos. 1-8) This section contains 8 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.
 

Q. FM radio broadcasts at 900 kHz. What wavelength does this corresponds to?

Detailed Solution for Test: Electromagnetic Radiations - Question 1


Test: Electromagnetic Radiations - Question 2

The nucleus of helium contains

Detailed Solution for Test: Electromagnetic Radiations - Question 2

A helium nucleus is made of two protons and two neutrons and has a charge +2.

Test: Electromagnetic Radiations - Question 3

Moseley’s equation is represented as   where, a and b are constants.

Q. If OA = 1, then atomic number of the element showing frequency of 400 Hz is

Detailed Solution for Test: Electromagnetic Radiations - Question 3


Thus, graph is a straight line

 

Test: Electromagnetic Radiations - Question 4

A gas absorbs photon of wavelength 355 nm and emits at two wavelengths. If one of the emissions is at 680 nm, the other is at

[AlEEE 2011]

Detailed Solution for Test: Electromagnetic Radiations - Question 4

Absorbed energy = Emitted energy



Test: Electromagnetic Radiations - Question 5

The longest wavelength of light capable of breaking a single (Cl — Cl) bond in Cl2 is if 

[AlEEE 2010]

Detailed Solution for Test: Electromagnetic Radiations - Question 5

ΔH = 242 kJ mol-1



Test: Electromagnetic Radiations - Question 6

Which of the following conclusions could not be derived from Rutherford’s α-particle scattering experiment?

Detailed Solution for Test: Electromagnetic Radiations - Question 6

Option A: Electrons (-) and nucleus (+) are held together by electrostatic forces of attraction.
Option B: Radius of the atom (= 10-10m) > radius of the nucleus (10-15m).
Option C: Most of the space is empty as given by the radius of the nucleus and atom.
Option D: As electron moves in a circular path, it emits energy and ultimately falls into the nucleus.

Thus, the correct option is D.

Test: Electromagnetic Radiations - Question 7

Which of the following statements is not correct about the characteristics of cathode rays?

Detailed Solution for Test: Electromagnetic Radiations - Question 7

(d) Cathode rays consist of negatively charged material particles called electron. They were discovered by William Crookes. The characteristics of cathode rays do not depend upon the material of electrodes and the nature of the gas present in the cathode ray tube.

Test: Electromagnetic Radiations - Question 8

Energy of a mole of radio wave photons with a frequency of 909 kHz is

Detailed Solution for Test: Electromagnetic Radiations - Question 8

E = N0hv
⇒ E = 6.02 x 1023 x 6.62 x 10-34 x 909 x10= 3.62 x 10-4 J

*Multiple options can be correct
Test: Electromagnetic Radiations - Question 9

Direction (Q. Nos. 9-11) This section contains 3 multiple-choice questions. Each question has four choices (a), (b), (c), and (d), out of which ONE or  MORE THANT ONE  is correct.

Q. Select the correct statement(s).

Detailed Solution for Test: Electromagnetic Radiations - Question 9

Option A: Oscillations travel through space at a velocity of light, thus electromagnetic radiation is in the form of energy E = hv.
Option B: Radiowaves, microwaves, X-rays, and visible light are part of the Electromagnetic radiation spectrum.
Option C: Some of the radiations are absorbed in the atmosphere, hence the spectrum differs.
Option D: Ozone layer absorbs ultraviolet radiation.

Hence, options A, B, C, and D are correct.

*Multiple options can be correct
Test: Electromagnetic Radiations - Question 10

Consider the following transitions n = 1 to n = 2 and then, n = 2 to n = 3.

Then

Detailed Solution for Test: Electromagnetic Radiations - Question 10

Energy values are additives i.e.


Hence, options A, C, D are correct.

*Multiple options can be correct
Test: Electromagnetic Radiations - Question 11

Select the correct statement(s).

Detailed Solution for Test: Electromagnetic Radiations - Question 11

Option A: The ideal body, which emits and absorbs all frequencies is called a black body
Option B:  As temperature increases, distribution of frequency (and energy) increases.

Option C: As temperature increases, radiation emitted is shifted to a lower wavelength, i.e. higher frequency.
Option D: All types of radiations have the same speed 3 x 108 ms-1.

Hence, options A, B, C, and D are correct.

Test: Electromagnetic Radiations - Question 12

Direction (Q. Nos. 12 and 13) This section contains a paragraph, wach describing  theory, experiments, data etc. three Questions related to paragraph have been  given.Each question have only one correct answer among the four given  ptions  (a),(b),(c),(d)

A hypothetical electromagnetic wave is pictured here.

 

Q. Energy associated with this wave is

Detailed Solution for Test: Electromagnetic Radiations - Question 12


A to E makes one complete wave.


Test: Electromagnetic Radiations - Question 13

A hypothetical electromagnetic wave is pictured here.

 

Q. A standing wave in a string 42 cm long has a total of six nodes (including those at the ends). Wavelength of the standing wave is

Detailed Solution for Test: Electromagnetic Radiations - Question 13


A to E makes one complete wave.



If there are n nodes including those at the ends, in a string of length /, then

Test: Electromagnetic Radiations - Question 14

Direction (Q. Nos. 14) Choice the correct combination of elements and column I and coloumn II are given as option (a), (b), (c) and (d), out of which ONE option is correct.

 

Q. The colours of visible light are at different wavelength. Match the wavelengths in Column I with their colours in Column II.

Detailed Solution for Test: Electromagnetic Radiations - Question 14

Thus, (i)(700nm) Red (u)
(ii) (600 nm) - Orange (t)
(iii) (580 nm) - Yellow (s)
(iv) (500nm) - Green (r)
(v) (460 nm) - Blue (q)
(vi) (400 nm) - Violet (p)

*Answer can only contain numeric values
Test: Electromagnetic Radiations - Question 15

Direction (Q. Nos. 15 and 16) This section contains 2 questions. when worked out will result in an integer from 0 to 9 (both inclusive)

Q. In Millikan’s experiment, the static electric charge on the oil drops has been obtained by shining X-rays. If the static electric charge on the oil drop is -1.282x 10-18 C, calculate the number of electrons present on it.


Detailed Solution for Test: Electromagnetic Radiations - Question 15

Charge on one electron = - 1.6022 x 10-19 C
Let, number of electrons = N
Then total charge = - N x 1.6022 x 10-19C
Given, total charge = -1.282 x 10-18 C
Thus, - N x 1.6022 x 10-19 C = - 1. 282 x 10-18C

∴ N = 8

*Answer can only contain numeric values
Test: Electromagnetic Radiations - Question 16

Energy change associated per mole of atoms with an atomic transition giving rise to radiations of 1 Hz is x * 10-10 J/mol. What is the value of x?


Detailed Solution for Test: Electromagnetic Radiations - Question 16

Energy = n.hv
where,
n = 1 mole or 6.023 × 1023 atoms
h = 6.626×10-34 J.sec
v (frequancy) = 1 Hz

⇒ E = 6.023 ×1023 × 6.626×10-34 × 1 = 3.91 × 10-10
so approximately value of x = 4.

204 videos|320 docs|229 tests
Use Code STAYHOME200 and get INR 200 additional OFF
Use Coupon Code
Information about Test: Electromagnetic Radiations Page
In this test you can find the Exam questions for Test: Electromagnetic Radiations solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Electromagnetic Radiations, EduRev gives you an ample number of Online tests for practice