General Science 8th MCQs Test - YLB Online Educational Forum

1. The human excretory system consists of

A.1 Kidney

B.Both of them

C.None of them

D.2 kidneys

2. Balance is an instrument used for measurement of

A.None of them

B.Time

C.Mass

D.Force

3. Acid turns methyl orange solution

A.Both of them

B.Red

C.Blue

D.None of them

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

A.Crust

B.Sky

C.None of them

D.Ozone

5. The energy resources soon can exhaust due to their

A.Zero Use

B.None of them

C.Unwise use

D.Less Use

6. Acid turns litmus paper

A.Both of them

B.Blue

C.Red

D.None of them

7. Corban dioxide helps in burning of things

A.True

B.None of them

C.both of them

D.False

8. The central nervous system consists of

A.Sensory neurons

B.both of them

C.Motor Neurons

D.None of them

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

A.Cell division

B.Reproduction

C.Cell wall

D.None of them

10. The international system of units was introduced in

A.None of them

B.1964

C.1960

D.1898

11. The meniscus of mercury is

A.None of them

B.Both of them

C.Convex

D.Concave

12. Chromosomes are consist of DNA and

A.Brain

B.None of them

C.Protein

D.Genes

13. CO2 is obtained by heating

A.Neutron

B.Calcium carbonate

C.None of them

D.Atom

14. Which of the following is sensory organ

A.Heart

B.Liver

C.Eye

D.None of them

15. 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

16. The action carried out automatically is called

A.None of them

B.Direct Action

C.Reflection action

D.Indirect action

17. The shape of chromosomes is like

A.X or Y

B.None of them

C.Only X

D.Only Y

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

A.Voluntary actions

B.None of them

C.Involuntary actions

D.Reflex action

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

A.None of them

B.Density

C.Volume

D.Pressure

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

A.One hour

B.One day

C.One second

D.None of them

21. The conversion of compound in ion is called

A.Realization

B.Ionization

C.None of them

D.both of them

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

A.Three

B.None of them

C.Two

D.Six

23. What produces insulin to human body

A.Stomach

B.Pancreas

C.None of them

D.Liver

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

A.Acids

B.None of them

C.Sulpher

D.Alkalis

25. The number of chromosomes in human sex cell is

A.23

B.None of them

C.43

D.32

26. Burning is an example of

A.Heat reaction

B.Chemical reaction

C.Atomic reaction

D.None of them

27. What is the functional unit of kidney

A.Unrainy Bladder

B.None of them

C.Nephron

D.Ureter

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

A.Heat reaction

B.None of them

C.Chemical reaction

D.Exothermic reaction

29. The unit of inheritable charactrics is

A.Brain

B.DNA

C.None of them

D.Genes

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

A.1

B.7

C.5

D.None of them

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