General Science 8th MCQs Test - YLB Online Educational Forum

1. Burning is an example of

A.None of them

B.Chemical reaction

C.Atomic reaction

D.Heat reaction

2. What is the functional unit of kidney

A.Ureter

B.None of them

C.Unrainy Bladder

D.Nephron

3. The conversion of compound in ion is called

A.both of them

B.None of them

C.Realization

D.Ionization

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

A.Cell division

B.Cell wall

C.None of them

D.Reproduction

5. Corban dioxide helps in burning of things

A.None of them

B.False

C.both of them

D.True

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

A.Six

B.None of them

C.Two

D.Three

7. Balance is an instrument used for measurement of

A.Force

B.Time

C.Mass

D.None of them

8. In any chemical reaction ;

A.Matter can neither be created nor be destroyed

B.None of them

C.Matter can be destroyed

D.Matter can created

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

A.Involuntary actions

B.Reflex action

C.Voluntary actions

D.None of them

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

A.None of them

B.Heat reaction

C.Exothermic reaction

D.Chemical reaction

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

A.Volume

B.Pressure

C.Density

D.None of them

12. What produces insulin to human body

A.None of them

B.Stomach

C.Liver

D.Pancreas

13. The international system of units was introduced in

A.1960

B.1964

C.1898

D.None of them

14. The shape of chromosomes is like

A.Only Y

B.X or Y

C.None of them

D.Only X

15. The action carried out automatically is called

A.Direct Action

B.Reflection action

C.Indirect action

D.None of them

16. Acid turns methyl orange solution

A.Blue

B.Red

C.Both of them

D.None of them

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

A.5

B.7

C.1

D.None of them

18. The unit of inheritable charactrics is

A.None of them

B.Genes

C.DNA

D.Brain

19. Acid turns litmus paper

A.Red

B.Both of them

C.None of them

D.Blue

20. The number of chromosomes in human sex cell is

A.32

B.43

C.None of them

D.23

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

A.None of them

B.One day

C.One second

D.One hour

22. Which of the following is sensory organ

A.Eye

B.Liver

C.Heart

D.None of them

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

A.Ozone

B.Sky

C.None of them

D.Crust

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

A.None of them

B.Sulpher

C.Alkalis

D.Acids

25. The central nervous system consists of

A.Sensory neurons

B.Motor Neurons

C.both of them

D.None of them

26. CO2 is obtained by heating

A.Atom

B.None of them

C.Neutron

D.Calcium carbonate

27. Chromosomes are consist of DNA and

A.Protein

B.Genes

C.None of them

D.Brain

28. The energy resources soon can exhaust due to their

A.Zero Use

B.Unwise use

C.Less Use

D.None of them

29. The meniscus of mercury is

A.None of them

B.Concave

C.Both of them

D.Convex

30. The human excretory system consists of

A.Both of them

B.None of them

C.1 Kidney

D.2 kidneys

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