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251-270: MCQs for General Science for Govt. Exams (UPSC and SSC)
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In this lesson, Dr. Roman Saini will discuss the MCQs related to various topics in General Science from Class 6 to Class 8 (Science) NCERT.

Roman Saini is teaching live on Unacademy Plus

Roman Saini
Part of a great founding team at Unacademy with Gaurav, Hemesh. Movies, Guitar, Books, Teaching.

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RD
we need mcqs regarding these act's
9th and 10plzzz.. thanks for 6to8
It is awesome but don't you think you have induct a plenty of biology questions!
thank you sir, it would be awesome if I get same type of lessons on 9-10 and 11-12 class McQ on science. thank you
thank you sir, it would be awesome if I get same type of lessons on 9-10 and 11-12 class McQ on science. thank you
  1. Q251. Carbohydrates are produced by? A. B. C. D. All Fungi, Bacteria, Viruses Some Bacteria, Algae and Green plants cells Some Bacteria, Fungi and algae Some Algae, green plant cells and viruses.


  2. Solution: B Self explanatory


  3. Q252. Which organic compound is found in most cells? A. Water B. Oxygen C. Glucose D. Nitrogen


  4. Solution: C Self explanatory


  5. Q253.Consider the following statements: 1. Fat is a major source of energy and also aids your body in absorbing fat soluble vitamins. 2. Vitamin A, C, D, E and K are Fat soluble Vitamins Select the correct answer using the code given below: A. 1 only B. 2 only C. Both 1 and 2 D. None


  6. Solution: A Vitamin C is not a Fat soluble Vitamin A, D, E and K are Fat soluble Vitamins


  7. Q254. Consider the following statements: 1. All Fats are derivatives of Fatty acid and glycerol. 2. Fats are broken down in the body by enzymes called Lipases produced in the pancreases. Select the correct answer using the code given below: A. 1 only B. 2 only C. Both 1 and 2 D. None of the above


  8. Solution: C Self explanatory


  9. Q255. Consider the following statements: In Saturated fats, 1. In Saturated fats, carbon-carbon atoms are connected by single bonds. 2. In Unsaturated fats, carbon chain is connected by double bonds 3. Omega- 3 fatty acid protects against the liver disease and the heart disease. Select the correct answer using the code given below: A. 1 and 2only B. 2 and 3 only C. 1 and 3 only D. All of the above


  10. Solution: D Including omega-3 fatty acids in a daily routine not only support cardiovascular health, arthritis and depression, but it may also help someone who is obese or living with liver disease protect his or her liver from scarring or further fat accumulation


  11. Q256. Consider the following statements: 1. Fish is the best source of Omega-3. 2. Unsaturated fats are more harmful than saturated fats because unsaturated fats can drive up total cholesterol 3. Trans-fats are worst kind of Dietary fats. Select the correct answer using the code given below: A. 2 and 3 only B. 2 and 4 only C. 1 and 3 only D. All of the above


  12. Solution: C A diet rich in saturated fats can drive up total cholesterol and tip the balance toward more harmful LDL cholesterol, which prompts blockages to form in arteries in the heart and elsewhere in the body. Hence saturated fats are more harmful than unsaturated fats. So the statement 3 is wrong For that reason, most nutrition experts recommend limiting saturated fat to under 10% of calories a day.


  13. Solution: C An endoscopy is a procedure in which your doctor uses specialized instruments to view and operate on the internal organs and vessels of your body. Endoscopes are also a tool helpful in the examination of improvised explosive devices by bomb disposal personnel Use of optical fiber is increasing its precision so most of the modern endoscope use optical fiber.


  14. Q259. Consider the following statements: 1. In the human body, Iron is required for forming haemoglobin. 2. Haemoglobin is a protein. 3. Green leafy vegetables are rich source of iron. Which of the above given statement(s) is/are INCORRECT: A. Only 1 B. Only 2 C. Only 3 D. None given statements) is/are I


  15. Solution: C lt sublimes when heated to make a bright purple vapor.


  16. Q261. Consider the following statements about calcium: 1. Calcium is required for blood clotting and muscle contraction. 2. Many cells have calcium channels on their surface. 3. Calcium as an element is not found in the human body, just calcium ions in the form of chemical compounds. 4. In human body, cells commit suicide by taking in toxic levels of calcium ions. Select the correct answer using the code given below: A. 1 only B. 1 and 2 only C. 1, 2 and 3 only D. All of the above


  17. Solution: D Sometimes cells are unhealthy and need to die in for the body to replace them with new, healthy cells Cells know when they should die and can trigger reactions to end their life cycles in many ways. It is called cell suicide. When this happens it is called apoptosis, also known as a 'programmed cell death, planned cell death or control cell death. One way cells accomplish apoptosis is by taking in toxic levels of calcium ions.


  18. Q263. Consider the following statements and choose the incorrect statements from the code: 1. Wheat is rich in carbohydrates, but poor in nutrients like proteins and fats. 2. Lack of protein results in discolouration of hair. 3. Lack of retinol is responsible of Beriberi disease. 4. Rickets is an indicator of riboflavin deficiency. Code: A. 1 and 2 only B. 1 and 3 only C. 2 and 3 only D. 3 and 4 only


  19. Q264. Match the given list: Mineral deficiency a) Calcium b) Phosphorus c) lodine d) Copper Select the correct answer using the code given below Related disease 1. Goitre 2. Yellow teeth 3. Low hunger 4. Bad muscular movement a) b c) d) A. C.


  20. 265.Which ofthefollowing disease does not displays th Q265. Which of the following disease does not displays the skin rashes as primary sign? A. Diphtheria B. Chicken pox C. Measles D. Small pox


  21. Solution: A Self explanatory


  22. Q266. Which of the following statement is incorrect? A. Scurvy is a disease resulting from a lack of vitamin C B. Vitamin C is also known as ascorbic acid. C. Broccoli is a very rich source of Vitamin C. D. Vitamin K is also known as collagen and founds in connective tissues of the animals.


  23. Solution: D Vitamin K is known as Phylloquinone and menaquinones. Collagen is the main structural protein in the extracellular space in the various connective tissues in animal bodies


  24. Q268. Choose the disease which do not happens due to lack of Vitamin K? A. Weakening of the bones B. Uncontrolled bleeding C. Swollen Gums D. Calcification of arteries and other soft tissues


  25. Solution: C Chlorine does not helps in bone formation and strengthening Vitamin B1 is known as Thiamine.