With reference to the uses of ‘concave mirrors’, read the following statements carefully:
1. They are commonly used in vehicles headlights to get powerful parallel beams of light.
2. They are often used as shaving mirrors to see a larger image of the face.
3. They are fitted on the sides of the vehicle to have a wider field of view.
4. Large concave mirrors are used to concentrate sunlight to produce heat in solar furnaces.
Which of the statements given above is/are correct?
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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.
Select the correct answer using the code given below:
With reference to ‘blood’ present in the human body, consider the following statements:
1. It carries oxygen and food to all the cells in human body.
2. It collects wastes from the cells for disposal.
3. It is a type of connective tissue.
Which of the statements given above is/are correct?
With reference to ‘blood’ present in the human body, consider the following statements:
1. It carries oxygen and food to all the cells in human body.
2. It collects wastes from the cells for disposal.
3. It is a type of connective tissue.
Which of the statements given above is/are correct?
With reference to heterotrophic eukaryotic organisms, Fungi, consider the following statements:
1. All fungus are parasites as they use host organism for food.
2. Lichens have a symbiotic relationship of blue-green algae and fungus.
3. Yeasts and mushrooms are varities of fungus.
Select the correct answer using the code given below:
Weeds are unwanted plants in a cultivated field. In this context, consider the following statements:
1. The weeds compete for food, space and light.
2. Weeds are responsible for affecting the growth of the crop.
3. Timely sowing of crops and crop rotation help in weed control.
Which of the statement(s) given above is/are correct?
Which of the following are the properties of the image formed by a plane mirror?
1. The image is always real and erect.
2. The size of the image is equal to that of the object.
3. The image formed is as far behind the mirror as the object is in front of it.
4. The image is laterally inverted.
Select the correct answer using the code given below.
Match the following pairs with reference to different types of ‘Phyla’ with their most distinctive features:
PHYLA | MOST DISTINCTIVE FEATURE |
1. Ctenophora | A. Body segmentation like rings. |
2. Platyhelminthes | B. Comb plates for locomotion. |
3. Annelida | C. Presence of jointed appendages. |
4. Arthropoda | D. Flat body, suckers |
Select the correct answer using the code given below.
In context of General Science, consider the following statements:
1. All fluids exert pressure on the base and walls of the container in which they are enclosed.
2. All objects experience a downward force of buoyancy when they are immersed in a fluid.
3. The magnitude of buoyancy force is independent of the density of the fluid in which the object is immersed.
Which of the statement(s) given above is/are correct?
2. Consider the following statements:
1. Typhoid fever in human beings is caused by a virus.
2. Plasmodium is a tiny protozoan responsible for causing malaria.
3. Plasmodium enters the human body through the bite of infected female Anopheles mosquito.
Which of the statements given above is/are correct?
The immune system is a complex network of cells known as immune cells that contains lymphocytes. In this context, consider the following statements:
1. Lymphocytes are red blood cells and one of the body's main types of immune cells.
2. Lymphocytes are made in the bone marrow and found in the blood and lymph tissue.
Which of the statements given above is/are correct?