Rainbow is produced when sunlight falls on drops of rain. Which of the following physical
phenomena are responsible for this?
(1). Dispersion
(2). Refraction
(3). Internal Reflection
Select the correct answer using the codes given below.
Subject: Science and Technology
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Rainbow is produced when sunlight falls on drops of rain. Which of the following physical
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Which of the following diseases can be transmitted from one person to another through
Which of the following diseases can be transmitted from one person to another through
tattooing?
(1). Chikungunya
(2). Hepatitis B
(3). HIV-AIDS
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Improper handling and storage of Cereal grains and oilseeds result in the production of toxins
Improper handling and storage of Cereal grains and oilseeds result in the production of toxins
known as aflatoxins which are not generally destroyed by normal cooking process. Aflatoxins
are produced by -
Ball bearings are used in bicycles, cars, etc., because
Ball bearings are used in bicycles, cars, etc., because
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Conside the following phenomena
Conside the following phenomena :
(1). Size of the sun at dusk
(2). Colour of the sun at dawn
(3). Moon being visible at dawn
(4). Twinkle of stars in the sky
(5). Polestar being visible in the sky
Which of the above are optical illusions? -
Which of the following pairs is/are correctly matched
Which of the following pairs is/are correctly matched ?
Spacecraft Purpose
1. Cassini-Huygens : Orbiting the Venus and transmitting data to the Earth.
2. Messenger : Mapping and investigating.
3. Voyager 1 and 2 : Exploring the outer solar system.
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With reference to technology for solar power production, consider the following statements
With reference to technology for solar power production, consider the following statements:
1. ‘Photovoltaics’ is a technology that generates electricity by direct conversion of light into electricity, while ‘Solar Thermal’ is a technology that utilizes the Sun’s rays to generate heat which is further used in electricity generation process.
2. Photovoltaics-generates Alternating Current (AC), while Solar Thermal generates Direct Current (DC).
3. India has manufacturing base for Solar Thermal technology, but not for photovoltaics.
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Consider the following techniques/phenomena
Consider the following techniques/phenomena:
1. Budding and grafting in fruit plants
2. Cytoplasmic male sterility
3. Gene silencing
Which of the above is/are used to create transgenic crops? -
With reference to Agni-IV Missile, which of the following statements is/are correct
With reference to Agni-IV Missile, which of the following statements is/are correct?
1. It is surface-to surface missile.
2. It is fuelled by liquid propellant only.
3. It can deliver one-tonne nuclear warheads about 7500km away.
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Consider the following diseases
Consider the following diseases:
1. Diphtheria
2. Chickenpox
3. Smallpox
Which of the above diseases has/have been eradicated in India?