light, heat, thermodynamics, wave motion, sound, optics & oscillations - Category wise Question and Answer Practice Test with Solutions

light, heat, thermodynamics, wave motion, sound, optics & oscillations PRACTICE TEST [16 - EXERCISES]

set 1

set 2

set 3

set 4

set 5

set 6

set 7

set 8

set 9

set 10

set 11

set 12

set 13

set 14

set 15

set 16

Question : 16 [UPPCS (Pre) 1998]

Wireless communication is reflected back to the Earth’s surface by the

a) Ionosphere

b) Stratosphere

c) Troposphere

d) Exosphere

Discuss »

Answer: (a)

Question : 17

Match List I with List II and select the correct answer using the codes given below the lists

List I List II
A. Isothermal process 1. Volume of the system remains constant
B. Adiabatic process 2. Pressure of the system remains constant
C. Isobaric process 3. Temperature of the system remains constant
D. Isochoric process 4. No heat transfer takes place between the system and the surrounding
Choose the correct option from the codes given below :

a) A – 3, B – 4, C – 2, D – 1

b) A – 2, B – 3, C – 4, D – 1

c) A – 2, B – 1, C – 4, D – 3

d) A – 4, B – 3, C – 1, D – 2

Discuss »

Answer: (a)

Question : 18 [RAS/RTS (Pre) 2008]

On a specific day and time, the temperature was 48ºC in Churu and 24ºC in Shimla. Two metallic cups identical in all respects contained water at 95ºC in Churu and 71ºC in Shimla. Which one of these two cups reached room temperature first?

a) Cup in Shimla

b) Both cups reached room temperature at the same time

c) Cup in Churu

d) Data are not enough to find out result

Discuss »

Answer: (b)

Question : 19

Consider the following statements :

  1. 1 gram of water at 100°C and 1 gram of steam at 100°C contain same amount of heat.
  2. 1 m3 of dry air is heavier than 1 m3 of humid air.
  3. Density of a substance in C.G.S. system is numerically equal to its specific gravity.
Which of the statements given above is /are correct ?

a) 1 and 3

b) 3 only

c) 1 only

d) 2 and 3

Discuss »

Answer: (b)

(1) 1 gram of steam at 100°C contains greater amount of heat in comparison to 1 gram of water at 100°C. Thus, statement (1) is incorrect.

(2) 1 m3 of humid air is heavier than 1m3 of dry air. Thus, statement (2) is incorrect.

(3) Density of a substance in C.G.S. system is numerically equal to its specific gravity. Thus, statement (3) is correct.

Question : 20

The marching soldiers break steps while crossing a bridge because of

a) echo

b) damped oscillations

c) resonance

d) reverberation

Discuss »

Answer: (c)

IMPORTANT general science mcq EXERCISES

set 14 Online Quiz

Click to Start..
1652 heat wave motion sound optics oscillations based general science mcq set 14 question answer pdf
general science mcq CATEGORIES
RECENT BLOGS
SSC CHSL Exam Centres 2023 Tier 1 & 2: State-Wise Apply Link
SSC CHSL Exam Centres 2023 Tier 1 & 2: State-Wise Apply Link Read more...
SSC CHSL 2023 Tier 2: Syllabus PDF & Exam Pattern [Changed]
SSC CHSL 2023 Tier 2: Syllabus PDF & Exam Pattern [Changed] Read more...
SSC CHSL Tier 1 Revised Syllabus 2023 & New Topics List PDF
SSC CHSL Tier 1 Revised Syllabus 2023 & New Topics List PDF Read more...
SSC CHSL 2023 Tier 2 New Revised Exam Pattern & Syllabus PDF
SSC CHSL 2023 Tier 2 New Revised Exam Pattern & Syllabus PDF Read more...

Recently Added Subject & Categories For All Competitive Exams

Most Important Antonyms Vocabulary - IBPS Clerk Prelims 2024

Latest Antonyms multiple choice questions and answers with free PDFfor IBPS Clerk Prelims 2024. English Vocabulary practice exercise for all bank exam

17-May-2024 by Careericons

Continue Reading »

Syllogism Practice Questions Answers PDF - IBPS Clerk 2024

Practice Verbal Reasoning Syllogism multiple choice questions and answers with Fully solved explanation, PDF for the IBPS Clerk Prelims 2024 Bank Exam

16-May-2024 by Careericons

Continue Reading »

IBPS Clerk Prelims 2024 Synonyms Questions Solved Answers

Most important IBPS Clerk Prelims 2024 Synonyms and Antonyms multiple choice questions and answers with detailed solutions, English vocabulary PDF Download

14-May-2024 by Careericons

Continue Reading »

New Cloze Test Questions and Answers PDF - IBPS Clerk 2024

The most important Cloze Test questions with detailed answers for upcoming IBPS Clerk prelims 2024. Latest English verbal ability practice MCQs, PDF

13-May-2024 by Careericons

Continue Reading »