General Science 8th MCQs Test - by youth leaders Balochistan

1. Corban dioxide helps in burning of things

A.True

B.both of them

C.None of them

D.False

2. The energy resources soon can exhaust due to their

A.None of them

B.Less Use

C.Unwise use

D.Zero Use

3. The perpendicular force acting on unit surface area of an object is called...............?

A.Volume

B.None of them

C.Density

D.Pressure

4. Burning is an example of

A.None of them

B.Chemical reaction

C.Atomic reaction

D.Heat reaction

5. The pH of a strong acid is equal to.............

A.None of them

B.1

C.5

D.7

6. The meniscus of mercury is

A.Concave

B.Both of them

C.Convex

D.None of them

7. The shape of chromosomes is like

A.None of them

B.Only X

C.Only Y

D.X or Y

8. ............... React chemically with fat or oil to form soap

A.Sulpher

B.None of them

C.Acids

D.Alkalis

9. Acid turns litmus paper

A.Red

B.Blue

C.None of them

D.Both of them

10. The unit of inheritable charactrics is

A.Genes

B.Brain

C.None of them

D.DNA

11. The process in which the cell is divided in two parts is called

A.None of them

B.Cell wall

C.Cell division

D.Reproduction

12. The number of chromosomes in human sex cell is

A.32

B.None of them

C.23

D.43

13. What produces insulin to human body

A.Pancreas

B.Stomach

C.Liver

D.None of them

14. What is the functional unit of kidney

A.Ureter

B.None of them

C.Nephron

D.Unrainy Bladder

15. Chromosomes are consist of DNA and

A.Brain

B.Genes

C.None of them

D.Protein

16. The action carried out automatically is called

A.Direct Action

B.None of them

C.Reflection action

D.Indirect action

17. One atom of caseium_133 Completes 9,192,631, 770 vibrations in;

A.One second

B.One hour

C.One day

D.None of them

18. Which of the following is sensory organ

A.Liver

B.Eye

C.None of them

D.Heart

19. The body actions that are performed prior thought are?

A.Involuntary actions

B.None of them

C.Voluntary actions

D.Reflex action

20. The central nervous system consists of

A.both of them

B.Motor Neurons

C.None of them

D.Sensory neurons

21. The chemical reaction in which heat is released is called

A.None of them

B.Heat reaction

C.Chemical reaction

D.Exothermic reaction

22. Balance is an instrument used for measurement of

A.Time

B.Mass

C.Force

D.None of them

23. The conversion of compound in ion is called

A.None of them

B.both of them

C.Ionization

D.Realization

24. Acid turns methyl orange solution

A.Blue

B.Red

C.Both of them

D.None of them

25. CO2 is obtained by heating

A.Neutron

B.Calcium carbonate

C.None of them

D.Atom

26. In any chemical reaction ;

A.Matter can be destroyed

B.None of them

C.Matter can neither be created nor be destroyed

D.Matter can created

27. What prevents ultraviolent radiation of sun from reaching the surface of earth

A.Sky

B.Ozone

C.None of them

D.Crust

28. The international system of units was introduced in

A.None of them

B.1960

C.1964

D.1898

29. The human excretory system consists of

A.None of them

B.2 kidneys

C.1 Kidney

D.Both of them

30. Zygote is formed by fusion of............... gametes

A.Three

B.Two

C.None of them

D.Six

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