CBSE Class 10 - Science Quiz (2020) (#eduvictors)(#cbseClass10Science)

CBSE Class 10 - Science Quiz (2020) 

Q1: The shiny finish of wall after white wash is because of 

(a) CaO
(b) Ca(OH)₂
(c) CaCO₃
(d) Ca₃(PO₄)₂


Q2: Chemical formula for baking soda is:

(a) NaHCO₃
(b) Na₂CO₃
(c) CaCO₃
(d) Mg(OH)₂


Q3: Green colour coating on copper utensils due to atmospheric corrosion is due to the formation of 



(a) CuO
(b) Cu(OH)₂
(c)  CuCl₂
(d) CuCO₃


Q4: Which of the following will show addition reaction?

(a) C₂H₆
(b) C₂H₄
(c) C₂H₅OH
(d) CH₃C₂HCH₃


Q5: Elements of 1st period contains valence electron in -

(a) M Shell
(b) N Shell
(c) K Shell
(d) L Shell


Q6: When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of

(a) oxygen
(b) carbon dioxide
(c) nitrogen
(d) water vapour


Q7: Centre for hunger is situated in

(a) Fore-Brain
(b) Mid-Brain
(c) Hind-Brain
(d) None of these


Q8: Site of fertilization in human reproduction system is:

(a) ovary
(b) uterrus
(c) vagina
(d) fallopian tube


Q9: A zygote formed has an X-chrmosome in herewith from the father will develop into a

(a) Boy
(b) X-Chromosome does not determine the sex of child.
(c) Girl
(d) Either boy or girl


Q10: The radius of curvature of concave mirror is 14cm, its focal length is

(a) -14 cm
(b) -7 cm
(c) +28cm
(d) +7 cm


Q11: The change in the focal length of human eye is caused due to

(a) Ciliary muscles
(b) Pupil
(c) Cornea
(d) Iris


Q12: A wire of resistance R is cut into 10 equal pieces and are then joined in parallel. The new resistance is:

(a) 1 R
(b) 0.1 R
(c) 0.01 R
(d) 10R


Q13: An alpha particle is diverted towards west is deflected towards north by a field. The field is magnetic. What will be the direction of field?

(a) Towards south
(b) Towards east
(c) Downward
(d) Upward


Q14: The main component of bio-gas is

(a) Methane
(b) Hydrogen
(c) Hydrogen Sulphide
(d) Carbon Dioxide


Q15: In the given food chain, suppose the amount of energy at fourth trophic level is 5 kJ, what will be the energy available at the producer level?
Grass → Grasshopper → Frog → Snake → Hawk
(a) 5 k J
(b) 50 k J
(c) 500 k J
(d) 5000 k J


Q16: 'Amrita Devi Bishnoi National Award' is given in memory for her work in

(a) Protection of Ganga from pollution
(b) Protection of trees in Reni Village of Garhwal.
(c) Protection of Khejri trees in Khejrali village near jodhpur in Rajashtan
(d) Protection of sal forest



Answer: 
1: (c) CaCO₃
2: (a) NaHCO₃
3: (d) CuCO₃
4: (b) C₂H₄
5: (c) K Shell
6: (b) carbon dioxide
7: (a) Fore-Brain
8: (d) fallopian tube
9: (c) Girl
10: (b) -7 cm
11: (a) Ciliary muscles
12: (c) 0.01 R
13: (c) Downward
14: (a) Methane
15: (d) 5000 k J
16: (c) Protection of Khejri trees in Khejrali village near jodhpur in Rajashtan



☛See also:
Simple Physics Quiz 
Physics 1 Mark Questions Asked in CBSE Examination Papers (Set-1)
Chemistry Assertion Type Questions (Set-1)
Ch 5 - Periodic Classification of Elements (MCQs)
Ch 5 - Periodic Classification Of Elements (Eduvictors Quiz)
Class 10 Biology Quiz (Fill in the blanks)
Science Quiz (2018)
Biology - 1 Mark Questions Asked in Examination Papers (Set-1)
CBSE Class 10 Sample Question Papers (2019-20) + Marking Scheme

Paragraph Based Questions (New Pattern) - 2019-20
Science Pre-Board Sample Question Paper (2019-20)
Science Pre-Board Sample Question Paper (Set-2) (2019-2020)
Science Pre-Board Sample Question Paper (Set-3) (2019-2020)
Science Pre-Board Sample Question Paper (Set-4) (2019-2020)
Science MCQs asked in CBSE Examination (SA-II)