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

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