Instruction
- Total number of questions : 10.
- Time alloted : 5 minutes.
- Each question carry 0.5 mark.
- No Negative marks
- DO NOT refresh the page.
- All the best :-).
1. | Which of the following statements is incorrect about the Lysosome? | |||||||||||||||||||
Your Answer: Option (Not Answered) Correct Answer: Option D Explanation: Golgi apparatus acts as a dispatch station of protein products received from the endoplasmic reticulum (ER). Lysosomes are membrane-bound organelles. They are also called suicide bags because in case of disturbance of their cellular metabolism they digest their own cell by releasing own enzymes. Though lysosomes are not commonly-found in plant cells, but some plant cells do contain lysosomes. |
2. | Which of the following is the most commonly used chemical for ripening of mangoes in India? | |||||||||||||||||||
Your Answer: Option (Not Answered) Correct Answer: Option D Explanation: Calcium Carbide is the most commonly used chemical for ripening of mangoes in India. It reacts with the moisture emanated by the respiration of the fruit. It liberates a gas called acetylene which helps in ripening the fruit. |
3. | Which of the following are the most and the least electronegative elements in the periodic table? | |||||||||||||||||||
Your Answer: Option (Not Answered) Correct Answer: Option A Explanation: Caesium is the least electronegative element in the periodic table and Fluorine is the most electronegative. Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. |
4. | Thin lamination is used in a transformer to reduce: | |||||||||||||||||||
Your Answer: Option (Not Answered) Correct Answer: Option A Explanation: Lamination in a transformer construction reduces eddy current losses. Lamination provides with the efficient transfer of energy from the primary coil to the secondary one. |
5. | Which of the following statements is incorrect about a Plane Mirror? | |||||||||||||||||||
Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: Second statement is incorrect because the optical power of plane mirror is zero. |
6. | A high-refractive-index polymer (HRIP) is a polymer that has a refractive index greater than _? | |||||||||||||||||||
Your Answer: Option (Not Answered) Correct Answer: Option D Explanation: A high-refractive-index polymer is a polymer that has a refractive index greater than 1.50. Such materials are required for anti-reflective coating and photonic devices such as light emitting diodes (LEDs) and image sensors. |
7. | Which of the following is not a part of the digestive system? | |||||||||||||||||||
Your Answer: Option (Not Answered) Correct Answer: Option C Explanation: The spleen plays multiple supporting roles in the body. It acts as a filter for blood as part of the immune system. The spleen is not part of the digestive system however is connected to the blood vessels of both the stomach and the pancreas. |
8. | Hemoglobin in humans has the highest affinity for which of the following gases? | |||||||||||||||||||
Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: Hemoglobin in humans has a very high affinity for carbon monoxide, forming carboxyhemoglobin which is a very bright red in color. Carbon monoxide is thus problematic for humans because it has affinity higher than that of oxygen. |
9. | Which of the following protects the body against infectious disease and foreign invaders? | |||||||||||||||||||
Your Answer: Option (Not Answered) Correct Answer: Option A Explanation: LWhite blood cells (WBCs), also called leukocytes or leucocytes, are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders. All white blood cells are produced and derived from multipotent cells in the bone marrow known as hematopoietic stem cells. |
10. | Which of the following is not present in animal cells? | |||||||||||||||||||
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