General Science 8th MCQs Test - YLB Online Educational Forum

1. What is the functional unit of kidney

A.Unrainy Bladder

B.Ureter

C.None of them

D.Nephron

2. The conversion of compound in ion is called

A.Realization

B.both of them

C.Ionization

D.None of them

3. The action carried out automatically is called

A.Reflection action

B.Indirect action

C.None of them

D.Direct Action

4. The unit of inheritable charactrics is

A.None of them

B.Brain

C.DNA

D.Genes

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

A.None of them

B.Reproduction

C.Cell division

D.Cell wall

6. What produces insulin to human body

A.Liver

B.Stomach

C.Pancreas

D.None of them

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

A.7

B.1

C.None of them

D.5

8. 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

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

A.Volume

B.Pressure

C.None of them

D.Density

10. CO2 is obtained by heating

A.Atom

B.Calcium carbonate

C.None of them

D.Neutron

11. Which of the following is sensory organ

A.Eye

B.None of them

C.Heart

D.Liver

12. Acid turns litmus paper

A.Red

B.Both of them

C.Blue

D.None of them

13. The shape of chromosomes is like

A.Only Y

B.Only X

C.None of them

D.X or Y

14. In any chemical reaction ;

A.Matter can be destroyed

B.None of them

C.Matter can created

D.Matter can neither be created nor be destroyed

15. The international system of units was introduced in

A.None of them

B.1964

C.1898

D.1960

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

A.Alkalis

B.Acids

C.None of them

D.Sulpher

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

A.Crust

B.Sky

C.Ozone

D.None of them

18. The human excretory system consists of

A.2 kidneys

B.None of them

C.Both of them

D.1 Kidney

19. Chromosomes are consist of DNA and

A.None of them

B.Genes

C.Brain

D.Protein

20. The energy resources soon can exhaust due to their

A.Zero Use

B.Unwise use

C.None of them

D.Less Use

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

A.None of them

B.Reflex action

C.Involuntary actions

D.Voluntary actions

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

A.Heat reaction

B.None of them

C.Exothermic reaction

D.Chemical reaction

23. Burning is an example of

A.None of them

B.Atomic reaction

C.Chemical reaction

D.Heat reaction

24. The number of chromosomes in human sex cell is

A.32

B.None of them

C.43

D.23

25. The meniscus of mercury is

A.Both of them

B.None of them

C.Concave

D.Convex

26. Acid turns methyl orange solution

A.Blue

B.Red

C.Both of them

D.None of them

27. The central nervous system consists of

A.None of them

B.Motor Neurons

C.Sensory neurons

D.both of them

28. Corban dioxide helps in burning of things

A.False

B.True

C.None of them

D.both of them

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

A.None of them

B.Three

C.Six

D.Two

30. Balance is an instrument used for measurement of

A.None of them

B.Time

C.Force

D.Mass

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