General Science Questions (MCQs) for Competitive Examinations
General Science Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations.
1. Which of the following is the essential element for batteries used in electric cars?
[A] Magnesium
[B] Lithium
[C] Sodium
[D] Bromine
Show Answer
Correct Answer: B [ Lithium ]
Notes:
The lithium-ion batteries needed to power electric cars use lithium carbonate or lithium hydroxide.
2. Which among the following plants is used as Green Manure?
[A] Wheat
[B] Sunhemp
[C] Cotton
[D] Rice
Show Answer
Correct Answer: B [Sunhemp]
Notes:
Sunhemp is used as Green Manure. Sunhemp as a green manure is needed be ploughed in 2 months after sowing when the plants begin to flower as it decomposes more rapidly and it will have a positive N balance at this stage.
3. Which of the following is the source of adult human stem cell?
[A] Liver
[B] Bone Marrow
[C] Brain
[D] Medulla
Show Answer
Correct Answer: B [Bone Marrow]
Notes:
adult stem cells have been used in treating several conditions including liver cirrhosis, chronic limb ischemia and endstage heart failure. Bone Marrow is a rich source of adult stem cells.
4. Potassium permanganate is used to purify water. Which among the following properties of Potassium permanganate helps in this work?
[A] sterilizing
[B] oxidizing
[C] reducing
[D] leaching
Show Answer
Correct Answer: B [oxidizing]
Notes:
Potassium permanganate is a point-of-entry treatment method that oxidizes dissolved iron, manganese, and hydrogen sulfide into solid particles that are filtered out of the water. It can also be used to control iron bacteria growth in wells.
5. Which organ in herbivorous animals helps in digestion of starch through bacteria?
[A] Intestine
[B] Stomach
[C] Caecum
[D] Liver
Show Answer
Correct Answer: C [Caecum]
Notes:
The cecum or caecum is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is that organ in herbivorous animals, which helps in digestion of starch through bacteria.
6. Corpus Callosum makes an important part of which among the following organs in Human body?
[A] Brain
[B] Liver
[C] Kidney
[D] Spinal Chord
Show Answer
Correct Answer: A [Brain]
Notes:
The corpus callosum is a large, C-shaped nerve fiber bundle which is found beneath the cerebral cortex. It stretches across the midline of the brain. IT connects the left and right cerebral hemispheres.
7. Which among the following is popularly called Hypo?
[A] Silver bromide
[B] Silver nitrate
[C] Sodium thiosulphate
[D] Sodium phosphate
Show Answer
Correct Answer: C [Sodium thiosulphate ]
Notes:
Sodium thiosulfate is an important inorganic salt with several medical uses. It is also called Sodium hyposulfite or ‘hypo’. It is used in several pharmaceutical preparations and also has various medical properties.
8. Which of the following disease is found in ground nut?
[A] Downy mildew
[B] Bunt
[C] Ikki
[D] None of the above
Show Answer
Correct Answer: C [Ikki]
Notes:
Ikki disease is found in ground nut. Groundnut is taxonomically classified as Arachis hypogaea, is a legume crop grown mainly for its edible seeds. It is widely grown in the tropics and subtropics.
9. Which among the following is true regarding fraternal twins?
[A] They may look similar but are not genetically identical
[B] They are exactly similar but are not genetically identical
[C] They are exactly similar and are genetically identical
[D] None of the above
Show Answer
Correct Answer: B [They are exactly similar but are not genetically identical]
Notes:
Twins are two offspring produced by the same pregnancy. Twins can be either monozygotic (‘identical’), meaning that they develop from one zygote, which splits and forms two embryos, or dizygotic (‘fraternal‘), meaning that each twin develops from a separate egg and each egg is fertilized by its own sperm cell.
10. With which of the following diseases Project Kavach is related to?
[A] Malaria
[B] Dengue
[C] AIDS
[D] Swineflu
Show Answer
Correct Answer: C [AIDS]
Notes:
Project Kavach is related to AIDS. The AIDS virus can be transmitted through contact with infected blood, semen or vaginal fluids. Within a few weeks of HIV infection, flu-like symptoms such as fever, sore throat and fatigue can occur.
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