Question

1: Which of the following is an element?

A  Sodium Chloride

B  potassium hydroxide

C  HCl

D  Na

2: Separation of camphor from salt:

A  Evaporation

B Centrifugation

C  Sublimation

D  Distillation

3: The solution in which no more solute can be dissolved in the same amount of solvent at a particular temperature.

A  Unsaturated solution

B  Saturated Solution

C  Colloidal Solution

D  Sol

4: Which of the following statement is true about compounds?

A  Compound is heterogeneous and has a fixed composition

B  Compound is heterogeneous and has no fixed composition

C  Compound is homogeneous and has a fixed composition

D  None of these

5: Which of the following will show Tyndall Effect?

A  Salt Solution

B  Copper sulphate solution

C  Sugar Solution

D  Starch Solution

6: Which of the following are homogeneous in nature?(i)ice,(ii) wood,(iii)Soil,(iv)air

A  (i) and (iii)

B  (ii)and (iv)

C  (I)and (iv)

D  (iii) and (iv)

7: Which of the following statement is true for pure substance?

A  Pure substance contain only one kind of particles

B  Pure substance may be compounds

C  Pure substances have the same composition throughout.

D  Pure substance can be exemplified by all elements other than nickel.

8: the smallest known cell is

A  y e a s t

B  o v u m

C mycoplasma

D  nerve cell

9: identify the organelles present only in animal cell

A  chloroplast

B  nucleus

C  centrioles

D  vacuoles

10: DNA is stand for

A deoxyribonucleic acid

B  dehydro ribonucleate acetate

C decarboribonucleic acid

D  all of these

11: Flexibility in plants is due to

A collenchyma

B sclerenchyma

C  parenchyma

D chlorenchyma

12: Choose the wrong statement

A  the nature of matrix differs according to the function of the tissue

B  fats are stored below the skin and in between the internal organs

C  epithelial tissue have intercellular space between them

D  cells of striated muscles are multinucleated and unbranched

13: Meristematic tissues in plants are

A  localised and permanent

B  not limited to certain regions

C  localised and dividing cell

D  growing in volume

14: A vector quantity has

A  direction

B  magnitude

C  both magnitude and direction

D  none of these

15: Retardation of a body is expressed in

A  m

B  m/s

C  m/s^3

D  m/s^2

16: An unbalanced force is necessary for an object to be

A  at rest

B  in motion with a constant velocity

C  accelerated

D  all of the preceding

17: Force is defined as

A  change in momentum

B  rate of change of momentum

C  the quantity that opposes inertia

D  the quantity that keeps the velocity constant

18: An object weight 10 N when measured on the surface of Earth. What should be its weight on moon

A  1.67 N

B  4.18 N

C  2.20 N

D  16.7 N

19: A weightless balloon contain 200 g of water its weight in water will be

A  100 g

B  200 g

C  400 g

D  zero

20: When a body floats in a liquid, its apparent weight is always

A  less than the weight of body

B  more than the weight of body

C  equal to the weight of the body

D  zero

21: Chalk powder in water is a Homogeneous mixture.

A  TRUE

B  FALSE

22: epithelial tissue is protective tissue

A  TRUE

B  FALSE

23: Purkinje give cell theory

A  TRUE

B  FALSE

24: A sharp knife is more effective in cutting objects than a blunt knife

A  TRUE

B  FALSE

Fill in the blanks

25: The weight is equal to the product of mass and velocity

A  TRUE

B  FALSE

26: Cutting of tree is a __________change.

A  Physical Change

B  Chemical Change

27: _____________cannot be broken into the simpler substance.

A  Element

B  Compound

28: ________ is dead cell

A  phloem fibres

B  phloem parenchyma

29: Gravitational force is due to........................

A  Mass

B  pressure

30: Newtons...................... law explains the concept of inertia

A  second

B  first

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Answer 1

Answer:

here,is your answer...

Answer 2

Answer:

1. (D) Na

2. (C) sublimation

3. (B) saturated solution

4. (C)compounds of heterogeneous mixtures have fixed composition

5. (B) copper sulphate solutions

6. (C) (i) and (iv)

7. (A) ........

8. (C) mycoplasma

9. (C) centrioles

10. (A) deoxyribonucleic acid

11. xxxxxxxxx

12. xxxxxxxxx

13. not confirm but (B)

14. (C) both magnitude and direction

15. (B) m/s

16. (C) accelerated

17. (C) .......

18. (A) 1.67N

19. (A) 100g

20. (A) less that the weight of body

21. (B) false

22. (A) true

23. (A) true

24. (A) true

25. (B) false

26. (B) chemical change

27. (A) elements

28. (A) phenom fibres

29. (A) mass

30. (B) first