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General Science Mixed Quiz: Set 114

  • 20 questions
  • 20 minutes
  • Difficulty: Medium
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About this quiz

Set 114 of the General Science mixed quiz has 20 multiple-choice questions from 19 different topics of the subject: Light: Reflection and Refraction, Food Preservation, Adulteration and Food Safety, Electricity and Magnetism and more. All of them were asked in real previous-year papers. A topic quiz checks one chapter; this set revises the whole subject at once, the way an exam paper does, where the next question can come from any chapter. Every question carries an explanation of why the correct option is right and why the others are wrong. Keep to the timer, read the explanations at the end, and go back to the notes of any topic where you slipped.

Questions in this quiz

20 questions with answers and explanations

Q2.General ScienceAsked in: UPSC Civil Services · CSE Prelims 2016, GS Paper IMedium

With reference to pre-packaged items in India, it is mandatory to the manufacturer to put which of the following information on the main label, as per the Food Safety and Standards (Packaging and Labelling) Regulations, 2011? 1. List of ingredients including additives 2. Nutrition information 3. Recommendations, if any, made by the medical profession about the possibility of any allergic reactions 4. Vegetarian/ non-vegetarian Select the correct answer using the code given below.

  1. A.1, 2 and 3
  2. B.2, 3 and 4
  3. C.1, 2 and 4
  4. D.1 and 4 only
Show answer
Correct answer: C. 1, 2 and 4

The 2011 FSSAI labelling rules made the list of ingredients, nutrition information and the vegetarian or non-vegetarian mark compulsory, but not medical advice on allergies.

Q3.General ScienceAsked in: CDS · CDS-I 2017, GKMedium

Suppose voltage V is applied across resistance R. The power dissipated in the resistance is P. Now the same voltage V is applied across a parallel combination of three equal resistors each of resistance R. Then the power dissipated in the second case will be

  1. A.P
  2. B.3P
  3. C.P/3
  4. D.2P/3
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Correct answer: B. 3P

Three equal resistors R in parallel have a combined resistance of R/3, and at the same voltage the power, V²/R, becomes three times as large.

Q4.General ScienceAsked in: NDA · NDA-II 2023, GATEasy

The two important features of sexual reproduction in higher organisms that create genetic diversity in offspring are

  1. A.Mitosis and fertilization
  2. B.Meiosis and fertilization
  3. C.Mitosis and binary fission
  4. D.Meiosis and conjugation
Show answer
Correct answer: B. Meiosis and fertilization

Meiosis makes gametes that differ from one another, and fertilization joins a gamete from each of two parents, so every offspring gets a new mix of genes.

Q5.General ScienceAsked in: CDS · CDS-II 2021, GKMedium

Which of the following statements is/are correct? 1. All the bases are alkali. 2. All alkalis dissolve in water. 3. Alkalis are soapy to touch, bitter in taste and corrosive in nature. Select the correct answer using the code given below :

  1. A.1 only
  2. B.1 and 3 only
  3. C.2 and 3 only
  4. D.3 only
Show answer
Correct answer: C. 2 and 3 only

An alkali is a base that dissolves in water, so all alkalis are soluble, but not all bases are alkalis; statement 1 has it the wrong way round.

Q6.General ScienceAsked in: UPSC CAPF · CAPF 2020, Paper IMedium

Which one of the following statements on photoelectric effect is NOT correct ?

  1. A.Albert Einstein received the Nobel Prize in Physics for explaining photoelectric effect
  2. B.For each metal, there is a threshold frequency ν₀ below which this effect is not observed
  3. C.At a frequency ν > ν₀, the kinetic energy of ejected electrons does not change on increasing the frequency of incident light
  4. D.The number of electrons ejected is proportional to the intensity of incident light
Show answer
Correct answer: C. At a frequency ν > ν₀, the kinetic energy of ejected electrons does not change on increasing the frequency of incident light

Above the threshold, the kinetic energy of the ejected electrons rises as the frequency of the light rises, so the statement that it does not change is wrong.

Q7.General ScienceAsked in: UPSC Civil Services · CSE Prelims 2020, GS Paper IEasy

Which of the following statements are correct regarding the general difference between plant and animal cells ? 1. Plant cells have cellulose cell walls whilst animal cells do not. 2. Plant cells do not have plasma membrane unlike animal cells which do. 3. Mature plant cell has one large vacuole whilst animal cell has many small vacuoles. Select the correct answer using the code given below:

  1. A.1 and 2 only
  2. B.2 and 3 only
  3. C.1 and 3 only
  4. D.1,2 and 3
Show answer
Correct answer: C. 1 and 3 only

Plant cells have a cellulose wall and one large central vacuole, but they do have a plasma membrane, just like animal cells.

Q10.General ScienceAsked in: NDA · NDA-II 2019, GATMedium

A solid disc and a solid sphere have the same mass and same radius. Which one has the higher moment of inertia about its centre of mass?

  1. A.The disc
  2. B.The sphere
  3. C.Both have the same moment of inertia
  4. D.The information provided is not sufficient to answer the question
Show answer
Correct answer: A. The disc

About an axis through the centre, a solid disc has I = ½MR² while a solid sphere has I = ⅖MR², and ½ is larger than ⅖.

Q11.General ScienceAsked in: UPSC CAPF · CAPF 2019, Paper IMedium

Phreatophytes are the plants adapted to grow in

  1. A.moist shaded places
  2. B.rocky environments
  3. C.arid environments
  4. D.active volcanic lava
Show answer
Correct answer: C. arid environments

Phreatophytes are deep-rooted plants that survive in dry regions by drawing water from the water table. The name comes from the Greek for 'well plant'.

Q12.General ScienceAsked in: UPSC CAPF · CAPF 2018, Paper IMedium

If the amplitude of oscillation of a simple pendulum is very small, then its time period of oscillation 1. depends on the length of the pendulum, L 2. depends on the acceleration due to gravity, g 3. depends upon the mass of the bob of the pendulum, m 4. does not depend upon the amplitude of the pendulum, A Select the correct answer using the code given below.

  1. A.1, 2 and 3
  2. B.1, 2 and 4
  3. C.2, 3 and 4
  4. D.1 and 4 only
Show answer
Correct answer: B. 1, 2 and 4

For small swings the time period is T = 2π√(L/g), which contains the length and gravity but neither the mass nor the amplitude.

Q14.General ScienceAsked in: NDA · NDA-II 2023, GATEasy

The streaming of light beams coming from the Sun through trees is said to have suggested that light travels in straight line. The particles on the path of light beams are visible to us because

  1. A.dust particles in the air reflect light into our eyes
  2. B.dust particles in the air scatter light into our eyes
  3. C.dust particles in the air refract light into our eyes
  4. D.dust particles in the air polarize light into our eyes
Show answer
Correct answer: B. dust particles in the air scatter light into our eyes

A beam seen from the side is visible only because tiny particles send some of its light sideways. Light travelling in a straight line cannot enter our eyes unless something redirects it towards us.

Q17.General ScienceAsked in: CDS · CDS-I 2026, GKMedium

Consider the following statements regarding matter : 1. Elements cannot be broken down into simpler substances. 2. A compound has variable composition and can be broken down into elements. 3. The solution of sulphur in carbon disulphide is an example of a homogeneous mixture. Which of the statements given above is/are not correct ?

  1. A.2 only
  2. B.1 and 3
  3. C.3 only
  4. D.1 and 2
Show answer
Correct answer: A. 2 only

Statement 2 is the only incorrect one, because a compound always has a fixed composition, not a variable one. An element is the simplest form of matter and cannot be broken down into simpler substances by chemical reactions, so statement 1 is correct.

Q18.General ScienceAsked in: NDA · NDA-II 2025, GATEasy

Which one of the following statements about surface tension is correct?

  1. A.It increases when temperature increases
  2. B.It decreases when temperature increases
  3. C.It will remain same with increase or decrease of temperature
  4. D.It will always decrease with increase or decrease of temperature
Show answer
Correct answer: B. It decreases when temperature increases

Heating weakens the attraction between the molecules of a liquid, so its surface pulls less tightly. Surface tension arises because molecules at the surface are pulled inward by their neighbours, making the surface behave like a stretched skin.

Q20.General ScienceAsked in: NDA · NDA-II 2018, GATEasy

The full form of LED is

  1. A.Light Emitting Diode
  2. B.Light Emitting Device
  3. C.Light Enhancing Device
  4. D.Light Enhancing Diode
Show answer
Correct answer: A. Light Emitting Diode

An LED is a semiconductor p–n junction diode that gives out light when current flows through it in the forward direction.

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