10th Standard Science English Medium Free Online Test 1 Mark Questions 2020 - 2021 Part - Five | QB365

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10th Standard Science English Medium Free Online Test 1 Mark Questions 2020 - 2021 Part - Five

Published on: 05/12/2020

Download Tamil Nadu 10th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.

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Std: 10th Standard - Science

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Questions:

Multiple Choice Question

34 x 1 = 34

__________is not obtained from petroleum.

(a)

Biogas

(b)

Diesel

(c)

Gasoline

(d)

LPG

Forest conservation Act was passed in__________

(a)

1952

(b)

1958

(c)

1978

(d)

1980

Which button is presses to run the script?

(a)

Green flag

(b)

Red flag

(c)

Blue flag

(d)

Yellow flag

Notes can be collected, edited and printed using______

(a)

Paint

(b)

Scratch

(c)

Notepad

(d)

LINUX

____________ is not a method of treatment for cancer.

(a)

Surgery

(b)

Immunotherapy

(c)

Vasectomy

(d)

Radiation therapy

DNA finger printing was developed by

(a)

Dr. Ian Wilmut

(b)

Alec Jeffrey

(c)

Lilly

(d)

Dr. Norman

The International rice research institute is located at___________.

(a)

New Delhi

(b)

Mexico

(c)

Phillipines

(d)

China

The organic acid present in Vinegar is ___________ acid.

(a)

methanoic

(b)

ethanoic

(c)

Propanoic

(d)

Butanoic

The other name of Antidiuretic hormone is

(a)

vasopressin

(b)

oxytocin

(c)

prolactin

(d)

growth hormone

10.

_____ helps in the contraction of the smooth muscles of uterus at the time of child birth.

(a)

Oxytocin

(b)

Prolactin

(c)

FSH

(d)

GTH

11.

______ is a growth inhibitor.

(a)

Auxin

(b)

(c)

Cytokinin

(d)

Ethylene

12.

Rectified spirit contains

(a)

95.5% of ethanol and 4.5% of water

(b)

100% pure alcohol

(c)

4.5% of ethanol and 95.5% of water

(d)

50% of ethanal and 50% of water

13.

Radioactive Carbon (C¹⁴) dating method was discovered by_________.

(a)

W.F.Libby

(b)

Niels Bohr

(c)

Issac Newton

(d)

William Harvey

14.

________ is not an example of vestigial organ.

(a)

Coccyx

(b)

Appendix

(c)

Thick hair

(d)

Nictitating membrane

15.

_____ is an inflammation of the meninges.

(a)

Meningitis

(b)

Myelin sheath

(c)

Piameter

(d)

Arachnoid membrane

16.

Copper displaces - metal from its solution.

(a)

(b)

(c)

(d)

all the above

17.

Pb(NO₃)₂ + 2KI ⟶ Pbl₂ + 2KNO₃ is a ______________ reaction

(a)

neutralization

(b)

Precipitation

(c)

decomposition

(d)

Combustion

18.

Which among the following chemical reaction is an example of combination reaction?
(i) H_2(g)+ CI_2(g) ⟶ 2HCI_(g)
(ii) AnOH_(aq)+ HCl_(aq) ⟶ NaCl_(aq)+ H2O₍₁₎
(iii)2Mg(S)+ O_2(g) ⟶ 2MgO_(S)
(iv) Zn(S)+ 2HCI_(aq)⟶ ZnCl₂ + H_2(g)

(a)

only (i)

(b)

both (i) and (iii)

(c)

only (iii)

(d)

both (i) and (ii)

19.

Which of the following is a dehydrating agent (absorbs moisture)

(a)

sodium hydroxide

(b)

anhydrous calcium chloride

(c)

sugar

(d)

None of these

20.

Non-aqueous solvent is ____________

(a)

benzene

(b)

ether

(c)

CS₂

(d)

All the above

21.

Solubility of a solute is governed by

(a)

nature of solute and solvent

(b)

temperature

(c)

pressure

(d)

all the above

22.

Franklin and Wilkin were awarded nobel prize for_______.

(a)

studying DNA replication

(b)

studying about RNA

(c)

X - ray diffraction studies of DNA.

(d)

isolating DNA

23.

Blister copper contains _________

(a)

50% pure copper

(b)

99% pure copper and 1% impurities

(c)

98% pure copper and 2% impurities

(d)

75% pure copper and 25% impurities

24.

Electronegativity values are based on ______________

(a)

bond energy

(b)

electron affinity

(c)

ionisation energy

(d)

all the above

25.

The first period of the modern periodic table has ________ elements.

(a)

(b)

(c)

(d)

26.

The ejection of milk is stimulated by posterior pituitary hormone called_____

(a)

Prolactin

(b)

Insulin

(c)

Oxytocin

(d)

Estrogen

27.

An oocyte is alive for about________ after it is released from the follicle

(a)

24 hours

(b)

12 hours

(c)

15 hours

(d)

20 hours

28.

_______takes place after implantation.

(a)

Cleavage

(b)

Fertilization

(c)

Gastrulation

(d)

Organogenesis

29.

The other name of red blood corpuscles is _________

(a)

erythrocytes

(b)

leucocytes

(c)

granulocytes

(d)

agranulocytes

30.

Two chambered heart is seen in__________

(a)

fish

(b)

amphibian

(c)

reptiles

(d)

mammals

31.

The gram molecular mass of CO₂ is

(a)

16g

(b)

18g

(c)

44g

(d)

17g

32.

The total number of atoms represented by the compound CuSO₄. 5H₂O is

(a)

(b)

(c)

(d)

33.

The opening of pulmonary arch into right ventricle of rabbit is guarded by_________ semilunar valves.

(a)

(b)

(c)

(d)

34.

Which of the following correctly represent 360 g of water
(i) 2 moles of H₂O
(ii) 20 moles of water
(iii) 6.023 x 10²³molecules of water
(iv) 1.2046 x 10²⁴molecules of water

(a)

(i)

(b)

(i) and (iv)

(c)

(ii) and (iii)

(d)

(ii) and (iv)