Consider the following statements:
1. The direction of current is taken opposite to the direction of flow of electrons.
2. Resistance is a property of a conductor that generates heat in the electrical circuit.
3. The SI unit of electric current is Amperes.
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In the Animal Kingdom, which of the following groups of organisms shows the highest level of cellular organisation?
1. Annelids
2. Sponges
3. Coelenterates
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Read the following statements carefully and select the correct answer from codes given below:
1. Working of electric motors involves the electric effect of electric current.
2. Working of electric generators involves the magnetic effect of moving magnets.
Which of the statement(s) given above is/are correct?
If we study a cell under a microscope, we will come across which among the following bodies inside it?
1.
Consider the following statements:
1. Anti-viral medicines are harder to make as viruses have biochemical mechanisms of their own.
2. Anti-bacterial medicines target both bacteria and fungi.
Which of the statement(s) given above is/are correct?
Match the following pairs with reference to common air pollutants and its effect/impact on plants and animals:
Pollutant | Associated Effect |
1. Sulphur dioxide | A. Aging in plants. |
2. Oxides of nitrogen | B. Reduces oxygen carrying capacity of blood. |
3. Hydrocarbons | C. Red haze in the traffic. |
4. Carbon monoxide | D. Stiffness of flower buds. |
Select the correct answer using the code given below.
Which of the following phenomena are caused due to ‘atmospheric refraction’?
1. Flickering of objects seen through a turbulent stream of hot air rising above a fire.
2. The reddening of the sun at sunrise and the sunset.
3. The apparent flattening of the Sun’s disc at sunrise and sunset.
4. The Sun is visible to us about 2 minutes before the actual sunrise, and about 2 minutes after the actual sunset.
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Consider the following statements:
1. Small intestine is the longest part of the human alimentary canal.
2. Carnivores have a longer small intestine than herbivores.
Which of the statements given above is/are correct?
Vectors are living organisms that can transmit infectious pathogens between humans, or from animals to humans. The commonest vectors we all know are mosquitoes. Which among the following vector borne diseases are caused by mosquitoes?
1. Yellow Fever
2. Lymphatic Filariasis
3. Zika Fever
4. Japanese Encephalitis
Select the correct answer using the code given below:
Consider the following statements:
1. The ‘danger’ signal lights are red in colour as the red is least scattered by fog or smoke.
2. The sky appears dark to passengers flying at very high altitudes because of scattering of light.
Which of the statements given above is/are correct?
A lemon kept in water in a glass tumbler appears to be bigger than its actual size, when viewed from the sides. This is because of which of the following reasons: