April 18, 2020 – Daily Quiz

1. The lighters used in households for lighting the gas stoves works on the principle of

(a) Piezoelectric effect

(b) Seebeck effect

(c) Thomson effect

(d) Thevenin effect

2. Permutit is used as

(a) Germicide in water purification 

(b) Softener of hard water

(c) An alternative to Chlorine in Chlorinating plants

(d) Flocculating agent to remove potash alum salts in water

3.

(1) Mango Ginger

(2) Sweet Potato

(3) Ginger

Which of the above is/are stems?

(a) 3 only 

(b) 1 & 3

(c) 1, 2, 3

(d) None of these

4. Which of the following is known as 916 Gold?
(a) 20 Carat Gold    

(b) 24 Carat Gold

(c) 18 Carat Gold               

(d) 22 Carat Gold

5. Who first isolated virus in a pure crystalline form?
(a) Mendel                     

(b) A.Kronberg                  

(c) W.M.Stanley   

(d) Beadle

Answers

  1. (a)

https://www.thehindu.com/sci-tech/science/iit-kharagpur-fabricates-multipurpose-piezoelectric-nanogenerator/article26416580.ece

2.(b)

https://www.thehindu.com/seta/2002/03/21/stories/2002032100220400.htm

3. (a)

Mango-ginger is the modification of root and these adventitious roots become swollen near the apex and form nodule-like structures for storage of food.

http://ncert.nic.in/ncerts/l/kelm307.pdf

4. (d)

https://indianexpress.com/article/business/commodities/ram-vilas-paswan-only-14-18-22-carat-hallmarked-gold-jewellery-from-jan-2021-6216987/

https://www.financialexpress.com/money/fake-gold-alert-gold-you-are-buying-today-may-not-be-pure-4-points-to-know/1745876/

5. (c)

https://www.thehindu.com/in-school/sh-science/crystallising-the-tobacco-mosaic-virus/article7367254.ece

https://indianexpress.com/article/explained/explained-june-almeida-first-human-coronavirus-6366740/

https://indianexpress.com/article/explained/types-of-human-coronaviruses-and-symptoms-6368444/

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