#### 10th Standard Science English Medium Free Online Test Creative 1 Mark Questions with Answer Key Part - 3

10th Standard

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Science

Time : 00:20:00 Hrs
Total Marks : 20

Part A

20 x 1 = 20
1. Mixing sugar in a glass of milk using a spoon is ______

(a)

force

(b)

momentum

(c)

inertia of motion

(d)

inertia of direction

2. A body of mass 1 kg is attracted by the earth with a force which is equal to

(a)

9.8 N

(b)

6.67 x 1011

(c)

1 N

(d)

9.8 ms-1

3. We can see objects because of

(a)

reflection

(b)

refraction

(c)

transmission

(d)

diffraction

4. According to snell's law

(a)

μ=$\frac { sini }{ sinr }$

(b)

μ =$\frac { { c }_{ a } }{ { c }_{ m } }$

(c)

μ=$\frac { sinr }{ sini }$

(d)

μ=$\frac { { c }_{ m } }{ { c }_{ a } }$

5. The change in the focal length of human eye is caused by

(a)

Pupil

(b)

Ciliary muscles

(c)

Cornea

(d)

Iris

6. The resolving power depends on

(a)

Dimetal of the lens

(b)

Wavelength

(c)

Refractive index

(d)

a & b

7. Increase in area due to heating is called

(a)

Linear expansion

(b)

Superficial expansion

(c)

Cubical expansion

(d)

real expansion

8. The resistance of material depends on.

(a)

Temperature

(b)

Length of conductor

(c)

Area of cross-section

(d)

All the above

9. If the resistance in a series circuit doubles, total current will be

(a)

doubles

(b)

halved

(c)

same

(d)

Increases

10. Sound can travel in

(a)

air

(b)

any material medium

(c)

vacuum

(d)

none

11. Henry Becquerel discovered ________ in 1896

(a)

nucleus

(b)

atom

(c)

isotopes

(d)

radioactivity

12. The first nuclear reactor was built at  _________.

(a)

Newyork

(b)

San Fransisco

(c)

New Jersey

(d)

Chicago

13. An atom of an element has 13 electrons and mass number 27. The nucleus of this atom contains ____________ neutrons.

(a)

26

(b)

13

(c)

14

(d)

27

14. Pick the correct order on decreasing trend of atomic size

(a)

Mg, Mg+, Mg2+

(b)

Mg+, Mg2+, Mg

(c)

Mg2+, Mg+, Mg

(d)

Mg2+, Mg, Mg+

15. White vitriol is ________

(a)

CaSO4·7H2O

(b)

MgSO4.7H2O

(c)

K2SO4.7H2O

(d)

ZnSO4.7H2O

16. Pick out the metal that displaces hydrogen from hydrochloric acid.

(a)

Zinc

(b)

Silver

(c)

Copper

(d)

Gold

17. Alcohols + Acids  Esters. This reaction is ___________

(a)

Ester hydrolysis

(b)

Esterification

(c)

Dehydrogenation

(d)

Oxidation

18. Name the tissue present between the upper and lower epidermis.

(a)

Lower epidermis tissue

(b)

Pith

(c)

Upper epidermis tissue

(d)

Mesophyll

19. ___________is the main circulatory medium in the human body.

(a)

Blood

(b)

Water

(c)

Lymph

(d)

Plasma

20. _________is a basal part of the Ovule.

(a)

Chalaza

(b)

Micropyle

(c)

Nucellus

(d)

Funiculus