Chemistry in Every Day Life
- Blood cells do not shrink in blood because blood is
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When the osmotic pressure outside the red blood cells is the same as the pressure inside the cells, the solution is isotonic with respect to the cytoplasm. This is the usual condition of red blood cells in plasma. Hence the cells do not shrink.
Correct Option: B
When the osmotic pressure outside the red blood cells is the same as the pressure inside the cells, the solution is isotonic with respect to the cytoplasm. This is the usual condition of red blood cells in plasma. Hence the cells do not shrink.
- Alum purifies muddy water by
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Aluminium sulphate, also known as Alum, when added to water reacts with the bicarbonate alkalinities present in water and forms a gelatinous precipitate. This floc attracts other fine particles and suspended material in water, and settles down at the bottom of the container.
Correct Option: D
Aluminium sulphate, also known as Alum, when added to water reacts with the bicarbonate alkalinities present in water and forms a gelatinous precipitate. This floc attracts other fine particles and suspended material in water, and settles down at the bottom of the container.
- Which one of the following is responsible for blue baby syndrome?
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Blue Baby Syndrome is an illness that begins when large amounts of nitrates in water are ingested by an infant and converted to nitrite by the digestive system. The nitrite then reacts with oxyhemoglobin to from methemoglobin, which cannot carry oxygen. If a large enough amount of methemoglobin is formed in the blood, body tissues may be deprived of oxygen, causing the infant to develop a blue coloration of their mucous membranes and possibly digestive and respiratory problems. This condition is also known as methemoglobinemia.
Correct Option: B
Blue Baby Syndrome is an illness that begins when large amounts of nitrates in water are ingested by an infant and converted to nitrite by the digestive system. The nitrite then reacts with oxyhemoglobin to from methemoglobin, which cannot carry oxygen. If a large enough amount of methemoglobin is formed in the blood, body tissues may be deprived of oxygen, causing the infant to develop a blue coloration of their mucous membranes and possibly digestive and respiratory problems. This condition is also known as methemoglobinemia.
