General Science 8th MCQs Test - YLB Online Educational Forum

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

A.Cell division

B.Reproduction

C.None of them

D.Cell wall

2. 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

3. Acid turns methyl orange solution

A.Red

B.None of them

C.Blue

D.Both of them

4. Acid turns litmus paper

A.Red

B.Both of them

C.None of them

D.Blue

5. The unit of inheritable charactrics is

A.DNA

B.Brain

C.Genes

D.None of them

6. The conversion of compound in ion is called

A.None of them

B.both of them

C.Realization

D.Ionization

7. The energy resources soon can exhaust due to their

A.None of them

B.Zero Use

C.Less Use

D.Unwise use

8. CO2 is obtained by heating

A.Calcium carbonate

B.None of them

C.Atom

D.Neutron

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

A.Crust

B.None of them

C.Sky

D.Ozone

10. In any chemical reaction ;

A.Matter can be destroyed

B.Matter can created

C.Matter can neither be created nor be destroyed

D.None of them

11. Which of the following is sensory organ

A.Eye

B.Heart

C.Liver

D.None of them

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

A.Heat reaction

B.None of them

C.Exothermic reaction

D.Chemical reaction

13. What is the functional unit of kidney

A.Ureter

B.None of them

C.Unrainy Bladder

D.Nephron

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

A.Density

B.Volume

C.Pressure

D.None of them

15. The number of chromosomes in human sex cell is

A.32

B.43

C.None of them

D.23

16. The meniscus of mercury is

A.None of them

B.Convex

C.Concave

D.Both of them

17. What produces insulin to human body

A.Liver

B.None of them

C.Pancreas

D.Stomach

18. The human excretory system consists of

A.1 Kidney

B.None of them

C.2 kidneys

D.Both of them

19. Chromosomes are consist of DNA and

A.None of them

B.Brain

C.Protein

D.Genes

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

A.Six

B.Two

C.Three

D.None of them

21. Corban dioxide helps in burning of things

A.None of them

B.False

C.both of them

D.True

22. The international system of units was introduced in

A.1964

B.1898

C.1960

D.None of them

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

A.None of them

B.1

C.5

D.7

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

A.Acids

B.Sulpher

C.None of them

D.Alkalis

25. The action carried out automatically is called

A.None of them

B.Direct Action

C.Indirect action

D.Reflection action

26. Balance is an instrument used for measurement of

A.None of them

B.Time

C.Mass

D.Force

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

A.None of them

B.Reflex action

C.Voluntary actions

D.Involuntary actions

28. Burning is an example of

A.None of them

B.Atomic reaction

C.Chemical reaction

D.Heat reaction

29. The central nervous system consists of

A.None of them

B.Motor Neurons

C.both of them

D.Sensory neurons

30. The shape of chromosomes is like

A.Only X

B.Only Y

C.X or Y

D.None of them

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