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. These questions are part of GKToday’s 35000+ MCQs Bank Course in GKToday Android App

1. A Gold Ring which is 50% pure. Its purity can be alternatively shown as __:
[A] 18 Carat
[B] 18 Karat
[C] 12 Carat
[D] 12 Karat

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2. What is thick vein present in the middle of the leaf called?
[A] Leaf venation
[B] Parallel venation
[C] Midrib
[D] Reticulate

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3. Grey hair is caused due to
____:
[A] Aging of epidermal cells
[B] Death of dermal cells
[C] Loss of sebum in epidermal cells
[D] Loss of melanin in epidermal cells

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4. Which of the following is/are agent(s) of infection?

[A] Physical contact
[B] Water
[C] Vectors
[D] All of the above

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5. Which of the following plant hormones are incorrectly paired?
[A] Cytokinins- senescence
[B] Abscisic acid- transpiration
[C] Auxins- apical dominance
[D] Gibberlins- bud and seed dormancy

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6. Which of the following bacterium causes crown gall disease in plants?
[A] Agrobacterium tumefaciens
[B] Pseudomonas fluorescens
[C] Bacillus thurigiensis
[D] None of the above

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7. People with Downs syndrome invariably affected by _____:
[A] Alzheimers disease
[B] Huntingtons disease
[C] Brain haemorrhage
[D] Meningitis

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8. What is the other name for Vitamin B2?

[A] Dextrose
[B] Riboflavin
[C] Thiamine
[D] Haemoglobin

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9. The blotting technique used to identify the isolated protein is _____:
[A] Western blotting
[B] Northern blotting
[C] Southern blotting
[D] Cloning

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10. The ____ helps in equalising the pressure on either sides of the eardrum:
[A] Malleus
[B] Incus
[C] Cochlear nerve
[D] Eustachian tube

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