General Science 8th MCQs Test - by youth leaders Balochistan

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

A.None of them

B.One day

C.One hour

D.One second

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

A.Acids

B.None of them

C.Alkalis

D.Sulpher

3. What produces insulin to human body

A.None of them

B.Liver

C.Pancreas

D.Stomach

4. The shape of chromosomes is like

A.Only X

B.X or Y

C.Only Y

D.None of them

5. Which of the following is sensory organ

A.Heart

B.None of them

C.Eye

D.Liver

6. The meniscus of mercury is

A.Both of them

B.Concave

C.None of them

D.Convex

7. Balance is an instrument used for measurement of

A.Mass

B.None of them

C.Time

D.Force

8. The unit of inheritable charactrics is

A.DNA

B.Genes

C.Brain

D.None of them

9. The energy resources soon can exhaust due to their

A.None of them

B.Zero Use

C.Unwise use

D.Less Use

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

A.Pressure

B.None of them

C.Volume

D.Density

11. Burning is an example of

A.None of them

B.Heat reaction

C.Atomic reaction

D.Chemical reaction

12. The human excretory system consists of

A.None of them

B.2 kidneys

C.Both of them

D.1 Kidney

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

A.Reflex action

B.None of them

C.Involuntary actions

D.Voluntary actions

14. CO2 is obtained by heating

A.None of them

B.Atom

C.Calcium carbonate

D.Neutron

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

A.Crust

B.Sky

C.None of them

D.Ozone

16. Acid turns litmus paper

A.None of them

B.Both of them

C.Red

D.Blue

17. The number of chromosomes in human sex cell is

A.32

B.None of them

C.43

D.23

18. What is the functional unit of kidney

A.Unrainy Bladder

B.None of them

C.Ureter

D.Nephron

19. In any chemical reaction ;

A.Matter can neither be created nor be destroyed

B.Matter can be destroyed

C.None of them

D.Matter can created

20. The international system of units was introduced in

A.1898

B.1960

C.None of them

D.1964

21. The action carried out automatically is called

A.Indirect action

B.None of them

C.Direct Action

D.Reflection action

22. Chromosomes are consist of DNA and

A.Protein

B.None of them

C.Genes

D.Brain

23. The conversion of compound in ion is called

A.None of them

B.Realization

C.Ionization

D.both of them

24. The central nervous system consists of

A.Motor Neurons

B.Sensory neurons

C.None of them

D.both of them

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

A.Six

B.Three

C.Two

D.None of them

26. Corban dioxide helps in burning of things

A.both of them

B.True

C.False

D.None of them

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

A.Cell wall

B.Reproduction

C.None of them

D.Cell division

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

A.7

B.None of them

C.1

D.5

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

A.Heat reaction

B.None of them

C.Exothermic reaction

D.Chemical reaction

30. Acid turns methyl orange solution

A.Both of them

B.Blue

C.None of them

D.Red

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