Science Mock Test 02

10:00

1. which of the following is used as a conducting material for touch screen ?

A) Grphite sheet
B) Graphene
C) Barkminister fullerin
D) Carbide polymer

 

The correct answer B) Graphene.Graphene is the newly discovered allotrop of carbon.It is one-atom-thick  planar sheets of carbon atoms that densely pact in a honeycomb crystal lities.It is a two dimensional substance with a very good conductivity.

2.Which of the following can be used as an insecticide ?

A) Potassium chloride
B) Sodium nitrate
C) Sodium sulphate
D) Copper sulphate

Correct Answer : D) Copper sulphate. Besides it can also be used for purification of copper, colouration and printing, and electroplating.

3. Artificial graphite can be obtained by which of the following process ?

A) Solvey Process
 B) Heber Process
C) Carbon reduction process
D) Acheson Process

Correct Answer : D) Acheson Process. sodium carbonate is produced by solved process. Ammonia is produced by hebre process. Some metals are produced through carbon reduction process from their oxides / sulphate. Zinc , Iron, Lead are some of the metals which can be produced by carbon reduction process.

4. 'Gout' is a kind of

A) Anaemia
B) Arthritis
C) Nervous disorder
D) None of the above

It is the most common disease in men. It suddenly attacks in the form of sudden burning pain stiffness and swelling in a joint usually a big toe.

5. Concave lens produce virtual image only when the object is placed 

A) In the focus
B) Between pole and focus
C) Behind the focus
D) None of the above

The image formed by a concave lens is always real and inverted. the size of the image depends on the position of the object. However if the object is placed between the pole and focus, the image will be from behind the mirror. Such image will be virtual erect and magnified.

6. The commercial name of sodium hexametophosphate is

A) Resin
B) Calgon
C) Borax
D) Olium

Calgon is the commercial name of sodium hexa metaphosphate. It is used to remove the permanent hardness of water. The process of removing permanent hardness by adding calgon is called Calgon's Method.

7. In which of the following both sexual and sexual reproduction can occur ?

A) Sponge
B) Hydra
C) Amaeba
D) Bat

The reproduction process of sponge can be both sexual and asexual. the reproduction process of hydra is budding which is asexual in nature. Amoeba reproduces through binary fission (asexual). 

8. The face beauty cream is an example of

A) Gel
B) Solid sol
C) Foam
D) Emulsion

Face beauty cream is a call Idea solution higher the dispersed phase is liquid and dispersion medium is also liquid. So it is an example of emulsion.

9. What is the SI unit of linear momentum ?

A) kg/s
B) kg-m/s
C) kg-m
D) None

Correct Answer : B) kg-m/s. It is a vector quantity. It is the product of mass and velocity.

10. Proxysomes are developed from

A) Golgi apparatus
B) Lysosome
C) Endoplasmic reticulum
D) Ribosome

Correct Answer : C) Endoplasmic reticulum. For more details about its formation function etc. please Click Here.

11. What is the most poisonous element ?

A) Urenium
B) Plutonium
C) Polonium
D) Radium

Correct Answer : C) Polonium. Some author states that plutonium is the most poisonous element but actually polonium is more toxic than plutonium. Radium is the most radioactive element.

12. which of the following is monogenetic parasite ?

A) Louse
B) Mosquito
C) Hydra
D) All of the above

Correct Answer : C) Hydra.

13. Which of the following is not a dwarf planet ?

A) Seres
B) Pluto
C) Haumey
D) None of the above

Correct Answer : D) None of the above.

14. In which of the following compound the oxidation state of oxygen is positive ?

A) Oxygen di fluoride.
B) Calcium oxide.
C) Water.
D) Nitrogen dioxide.

Correct Answer : Oxygen di fluoride.

15. Which of the following is a polymer of fructose ?

A) Albumin
B) Levulose
C) Dextrose
D) Inulin

Correct Answer : D) Inulin.

16. Which of the following forces is weakest ?

A) Magnetic force
B) Electric force
C) Nuclear force
D) Gravitational force

Correct Answer : D) Gravitational force.

17. Which of the following is the purest form of iron ?

A) Pig iron
B) Wrote iron
C) Steel
D) Cast iron

Correct Answer : B) Wrote iron.

18. Which of the following metal does not form amalgam ?

A) Tungsten
B) Iron
C) Aluminium
D) Zinc

Correct Answer : A) Tungsten.

19. At STP, the number of molecules present in one mole of gas is

A) `6.023 × 10^23`
B) `6.023 × 10^22`
C) `6.023 × 10^28`
D) `6.032 × 19^23`

Correct Answer : A) `6.023 × 10^23`.

20. Which of the following is the simplest amino acid ?

A) Glycine
B) Valine
C) Alanine
D) Tyrosine

Correct Answer : A) Glycine.

21. Which of the following is called oil of mirabene?

A) Nitrobenzene
B) Naphthalene
C) Pyridine
D) Benzene

Correct Answer : A) Nitrobenzene

22. Zinc Sulphate is known as

A) White Vitriol
B) Blue Vitriol
C) Oil of Vitriol
D) None of the above

Correct Answer : A) White Vitriol

23. Waves used in telecommunication is

A) Visible Light
B) Infra red
C) Ultra violet
D) Micro wave

Correct Answer : D) Micro wave.

24. A large group of stars is called

A) Nebula
B) Galaxy
C) Solar system
D) Black holes

Correct Answer : B) Galaxy.

25. Which of the following is NOT correct regarding glycogen ?

A) It turns red in contact of Iodine.
B) It is stored in liver.
C) It is soluble in water.
D) None of the above.

Correct Answer : C) It is soluble in water.