General Science 8th MCQs Test - YLB Online Educational Forum

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

A.5

B.1

C.7

D.None of them

2. What produces insulin to human body

A.None of them

B.Pancreas

C.Liver

D.Stomach

3. The action carried out automatically is called

A.Reflection action

B.Direct Action

C.Indirect action

D.None of them

4. CO2 is obtained by heating

A.Neutron

B.Atom

C.None of them

D.Calcium carbonate

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

A.Alkalis

B.Acids

C.None of them

D.Sulpher

6. The conversion of compound in ion is called

A.Ionization

B.None of them

C.Realization

D.both of them

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

A.One day

B.None of them

C.One hour

D.One second

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

A.Two

B.None of them

C.Three

D.Six

9. What is the functional unit of kidney

A.Unrainy Bladder

B.Nephron

C.None of them

D.Ureter

10. The energy resources soon can exhaust due to their

A.Unwise use

B.None of them

C.Less Use

D.Zero Use

11. Chromosomes are consist of DNA and

A.Brain

B.None of them

C.Genes

D.Protein

12. Acid turns litmus paper

A.Red

B.Both of them

C.None of them

D.Blue

13. The human excretory system consists of

A.1 Kidney

B.Both of them

C.None of them

D.2 kidneys

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

A.Sky

B.Crust

C.Ozone

D.None of them

15. The unit of inheritable charactrics is

A.Brain

B.Genes

C.None of them

D.DNA

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

A.None of them

B.Volume

C.Density

D.Pressure

17. The meniscus of mercury is

A.None of them

B.Both of them

C.Concave

D.Convex

18. Acid turns methyl orange solution

A.None of them

B.Red

C.Both of them

D.Blue

19. Burning is an example of

A.None of them

B.Heat reaction

C.Atomic reaction

D.Chemical reaction

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

A.None of them

B.Voluntary actions

C.Reflex action

D.Involuntary actions

21. Which of the following is sensory organ

A.Eye

B.Liver

C.None of them

D.Heart

22. The number of chromosomes in human sex cell is

A.32

B.43

C.23

D.None of them

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

A.Reproduction

B.None of them

C.Cell division

D.Cell wall

24. Balance is an instrument used for measurement of

A.Force

B.Time

C.Mass

D.None of them

25. Corban dioxide helps in burning of things

A.both of them

B.False

C.None of them

D.True

26. The shape of chromosomes is like

A.Only Y

B.X or Y

C.Only X

D.None of them

27. The international system of units was introduced in

A.1964

B.None of them

C.1898

D.1960

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

A.Heat reaction

B.Exothermic reaction

C.None of them

D.Chemical reaction

29. The central nervous system consists of

A.None of them

B.Motor Neurons

C.Sensory neurons

D.both of them

30. In any chemical reaction ;

A.Matter can neither be created nor be destroyed

B.Matter can be destroyed

C.Matter can created

D.None of them

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