General Science Practice Question and Answer

Q:

Amphoteric oxide is-

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  • 1
    aluminum
    Correct
    Wrong
  • 2
    zinc oxide
    Correct
    Wrong
  • 3
    Both A and B
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 3. "Both A and B"
Explanation :

An amphoteric oxide is a type of oxide that can act as both an acid and a base. This means it can react with both acids and bases, either accepting or donating protons (H⁺ ions) depending on the pH of the solution. Amphoteric oxides exhibit this dual behavior because they have both acidic and basic properties. Aluminum oxide (Al₂O₃) and zinc oxide (ZnO) are examples of common amphoteric oxides.

Q:

Metals are electropositive elements because-

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  • 1
    They themselves convert into cations by donating electrons to non-metals.
    Correct
    Wrong
  • 2
    They convert themselves into cations by taking electrons from metals.
    Correct
    Wrong
  • 3
    metal is reactive
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 1. "They themselves convert into cations by donating electrons to non-metals."
Explanation :

Metals are electropositive elements because they tend to lose electrons easily. In chemical reactions, metals readily give away their outer electrons to form positive ions, making them good conductors of electricity and heat. This electron loss leads to the formation of cations, which contribute to the electropositive nature of metals.

Q:

Which of the following shows the correct relationship?

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  • 1
    1 volt = 1 joule x 1 coulomb
    Correct
    Wrong
  • 2
    1 volt = 1 joule / 1 coulomb
    Correct
    Wrong
  • 3
    1 volt = 1 coulomb/1 joule
    Correct
    Wrong
  • 4
    1 volt = 1 joule / 1 coulomb
    Correct
    Wrong
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Answer : 2. "1 volt = 1 joule / 1 coulomb"
Explanation :

1 volt = 1 joule / 1 coulomb

This equation represents the definition of voltage (in volts). It states that one volt is equal to one joule of energy per one coulomb of charge. Voltage measures the electric potential difference between two points and is a fundamental concept in electrical physics.

Q:

A copper disc has a circular hole in the center when the copper disc is heated then the diameter of the hole is-

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  • 1
    will remain the same
    Correct
    Wrong
  • 2
    will decrease
    Correct
    Wrong
  • 3
    will increase
    Correct
    Wrong
  • 4
    will depend on other factors
    Correct
    Wrong
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Answer : 2. "will decrease"
Explanation :

When a copper disc with a circular hole in the center is heated, the diameter of the hole will generally increase. This phenomenon occurs due to the expansion of the copper material as it is heated. When a material is heated, its particles gain energy and move more vigorously, leading to an increase in volume, and consequently, an increase in the diameter of the hole and the entire disc. The exact amount of expansion would depend on factors such as the temperature increase and the material properties of copper.

Q:

The indigenously made Atmospheric Water Generator (AWG) by which Navratna company can make water from the moisture in the atmosphere?

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  • 1
    Gail India Limited
    Correct
    Wrong
  • 2
    Bharat Electronics Limited
    Correct
    Wrong
  • 3
    Bharat Heavy Electronics Limited
    Correct
    Wrong
  • 4
    steel authority of India
    Correct
    Wrong
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Answer : 2. "Bharat Electronics Limited"

Q:

Seed therapy is used to treat what?

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  • 1
    aids
    Correct
    Wrong
  • 2
    tuberculosis
    Correct
    Wrong
  • 3
    cancer
    Correct
    Wrong
  • 4
    asthma
    Correct
    Wrong
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Answer : 3. "cancer"
Explanation :

Radiation seed therapy, especially with Cesium-131, is an innovative tool in the fight against cancer.

Q:

Due to which behavior of the barometer which measures the atmospheric pressure, "thunderstorm is coming" is predicted?

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  • 1
    the barometer reading rises slowly
    Correct
    Wrong
  • 2
    the barometer reading slowly goes down
    Correct
    Wrong
  • 3
    barometer reading rises suddenly
    Correct
    Wrong
  • 4
    barometer reading rises suddenly
    Correct
    Wrong
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Answer : 4. "barometer reading rises suddenly"
Explanation :

A falling barometric pressure, detected by a barometer, signals an approaching thunderstorm. This drop indicates unstable atmospheric conditions, often preceding stormy weather. Meteorologists use barometric readings to predict thunderstorms, as the decrease in pressure signifies the likelihood of imminent weather disturbances and allows for timely weather warnings.


Q:

Which gas is filled in the balloons used to get information about weather related changes?

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  • 1
    hydrogen
    Correct
    Wrong
  • 2
    helium
    Correct
    Wrong
  • 3
    oxygen
    Correct
    Wrong
  • 4
    nitrogen
    Correct
    Wrong
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Answer : 2. "helium"
Explanation :

Helium: It is an inert gas that is lighter than air. It is non-flammable.

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