The presence of certain minerals is essential in water, however, if found in excess they can be harmful to our body. In this context, which of the following statements are correct?
1. Deficiency of fluoride in drinking water causes diseases such as tooth decay.
2. Excessive sulphate in drinking water causes laxative effect.
3. Excess lead in drinking water can cause disease such as ‘blue baby’ syndrome.
Select the correct answer using the code given below.
More Questions Selected Just For You. Attempt Now!
Consider the following statements:
1. Methanol is a low carbon, hydrogen carrier fuel produced from high ash coal, CO2 from thermal power plants and natural gas.
2. ‘Methanol Economy’ programme has been launched with the objective of reducing India's oil import bill and greenhouse gas (GHG) emissions.
3. The Methanol Economy programme has been launched by the Ministry of Petroleum and Natural Gas.
Which of the statements given above is/are correct?
The presence of certain minerals is essential in water, however, if found in excess they can be harmful to our body. In this context, which of the following statements are correct?
1. Deficiency of fluoride in drinking water causes diseases such as tooth decay.
2. Excessive sulphate in drinking water causes laxative effect.
3. Excess lead in drinking water can cause disease such as ‘blue baby’ syndrome.
Select the correct answer using the code given below.
Consider the following statements about the ‘properties of ethanol’:
1. Ethanol is insoluble in water.
2. Consumption of small quantities of dilute ethanol causes drunkenness.
3. Ethanol can be blended with diesel.
4. Ethanol is used as a solvent in many medicines.
Which of the statements given above are correct?
Consider the following statements:
1. Cold-blooded animals do not have the capacity to regulate their body temperature.
2. Amphibians are cold-blooded animals and reptiles are warm-blooded animals.
Which of the statements given above is/are correct?
Which of the following statement(s) is/are correct?
1. The B-lymphocytes in human body produce an army of proteins in response to pathogens into our blood to fight with them.
2. The T-lymphocytes mediate cell-mediated immunity (CMI) which is responsible for the graft (transplanted body-part) rejection.
Select the correct answer using the code given below.
The twinkling of a star occurs due to atmospheric refraction of starlight. This twinkling phenomenon occurs only in stars and not in planets, it is because of which of the following reasons?
In context of ‘Scrub Typhus’, which of the statements given below is/are correct?
1. It is a disease caused by a bacterium and it spreads to people through bites of infected chiggers.
2. Antibiotics are most effective form of medicine to cure this disease.
3. Recently, a special vaccine has been developed for its prevention by the Department of Biotechnology.
Select the correct answer using codes given below:
Consider the following statements:
1. Some substances like carbon dioxide or oxygen can move across the cell membrane by a process called Osmosis.
2. In the cell’s external environment, the concentration of carbon dioxide is low as compared to that inside the cell.
Which of the statement(s) given above is/are correct?
The use of an electric fuse protects the electric circuit and the appliances from a possible damage by
Consider the following statements:
1. A person with myopia can see nearby objects clearly but cannot see distant objects distinctly.
2. In a myopic eye, the image of a distant object is formed behind the retina and not at the retina itself.
3. The defect of myopia can be corrected by using a concave lens of suitable power.
Which of the statements given above is/are correct?