Question 1 :
Mitochondrion is known as the powerhouse of the cell because it contains enzymes that are needed for stepwise oxidation of food stuffs (carbohydrate, fats or lipids and proteins) present in the cells to $CO_2$ and water. Is it true?
Question 2 :
Carry out the following osmosis experiment:
Take four peeled potato halves and scoop each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now,
(a) Keep cup A empty
(b) Put one teaspoon sugar in cup B
(c) Put one teaspoon salt in cup C
(d) Put one teaspoon sugar in the boiled potato cup D.
Keep these for two hours. Then observe the four potato cups and Explain why water does not gather in the hollowed out portions of A and D?
Question 3 :
When rheo leaves are boiled in water first and then a drop of sugar syrup is put on it, can we say that boiling shall kill the leaves?
Question 4 :
Name the organelle which show analogy written as: Transporting channels of the cell.
Question 5 :
Name the organelle which show analogy written as: Packaging and dispatching unit of the cell.
Question 8 :
Are the answers for the questions (condition essential for good health and for being free of diseases) necessarily the same or different ?
Question 12 :
Which of the following has more inertia, a bicycle or a train?
Question 13 :
To make a saturated solution 36 g of sodium chloride is dissolved in 100 g of water at 293 K. Find its concentration at this temperature.
Question 18 :
True or False. Matter is composed of very small particles like atoms or molecules.
Question 20 :
Hydrogen and oxygen combine in the ratio of 1 : 8 by mass to form water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas?
Question 22 :
What is the SI prefix for $10^{-2}$ multiples and submultiples of a unit?
Question 24 :
A baby is not able to tell her/his caretakers that she/he is sick. What would help us to find out that the baby is sick?
Question 25 :
For vector-borne infections, we can prevent exposure by providing living conditions that are not overcrowded. TRUE or FALSE?
