CBSE Class 6 Science Sample Paper Set 6

CBSE Class 6 Science Sample Paper

SECTION A

1. Fill in the blanks with appropriate answers:
A. You can separate a mixture of prepared tea and tea leaves by _______.
B. ________ method is used to separate oil from water.
C. Generally on cooling, metals _______.
D. Bursting of balloon is a/an ______ change.
E. Plants having parallel venation have ______ roots.
F. The process of plants preparing their own food is known as ______.
G. Plants with hard and woody stem are known as _______.
H. Falling of leaves from tree and drying up is a/an______ change.

2. Give the terminology for the following: -\
A. Method of separating heavier and lighter components of a mixture by wind or by blowing air.
B. The small bead like structures inside the ovary.
C. The gas released during photosynthesis.
D. Plants with weak stem that cannot stand upright but spread on the ground.
E. The process in which water changes into vapours on heating.
F. Paheli bought brinjal, french beans, carrot and peas from market, all mixed in a bag. Name the method to separate them

3. Match the following: -

4. Answer the following questions: - 
A. Amit wants to test if plants need sunlight to make food.
He keeps a potted plant in sunlight.
After five days, he tests for the presence of starch in the leaves.

(a). How can Amit improve his test?
i. He should choose a plant with larger green leaves.
ii. He should test another plant without leaves under the sun.
iii. He should test a similar plant kept in the dark for five days.
iv. He should cover the plant with a transparent glass to keep it warm.
(b). Which of the following statements is true?
i. Leaves supply food and water in plants.
ii Leaves lose water through tiny pores on them.
iii.
.
Leaves give out oxygen while making food

B. Mary lit an incense stick.
She sensed a pleasant smell for as long as the stick was buring.
The incense stick burnt up completely, leaving some ash behind.

(a). What can be concluded from Mary’s activity?
Can this be concluded from the activity?                                              Yes or No
i. Incense sticks contain chemicals that produce smell when burnt.         Yes/No
ii. Burning of incense sticks produce light.                                              Yes/No
iii. A new substance is formed by burning of incense sticks.                     Yes/No

(b). Which of these changes can be reversed?            
i. Boiling of egg
ii. Burning of wood
iii. Melting of ice cream
iv. Making curd from milk.

C. Suraj collected muddy water from a pond.
He separated the water from the mud in three steps as shown in the pictures below.

(b). Which of these properties did Suraj use to separate mud from water?
i. Mud floats on water.
ii. Mud dissolves in water.
iii. Mud turns water cloudy.
iv. Mud is heavier than water.

SECTION B

5. Answer the following in short: 

A. Is it possible to separate sugar mixed with wheat flour? Justify your answer.

B. Give one example each from daily life where expansion and contraction can be observed.

C. Give one difference between Fibrous and Tap root.

D. Lemonade is prepared by mixing lemon juice and sugar in water. You wish to add ice also to cool it. In which case would it be possible to dissolve more sugar- before adding ice or after ? Why?

E. Write four changes that happen in our body.

F. What are the two ways to dissolve more solute in a saturated solution?
                                 OR
What is handpicking? When is this method used?

G. Write two main functions of leaves.
                        OR
Give one difference between Parallel and Reticulate Venation.

6. Answer the following in detail: 

A. Define Saturated and Unsaturated solutions. Give an example of a saturated solution.

B. Give three different types of changes noticed around us.

C. Give one difference between Reversible and Irreversible Change. Also give one example of both the changes.

D. Write three main functions of stem.

E. Name any six parts of a flower.
                  OR
Write three functions of roots.

F. Differentiate between Solution and Solvent. Give one example of each.
                                                         OR
Explain Decantation and Sedimentation. Give one example in which both processes are used.

SECTION C

7. (a) Draw a neat, well labelled diagram of a leaf. (Four labels) 5M
(b) Draw diagrams of tap and fibrous roots.
                               OR
(a) Draw and label the parts of a stamen and a pistil.
(b) Draw diagram of a leaf having reticulate venation.

8. Read the paragraph given below carefully and answer the related questions that follow:
The water changes into its vapours. You observed that water vapour gets changed into liquid water when it is cooled. We all have noticed melting of ice. Ice melts when it is heated. What does it change into?

A. When does water change into its vapours? 5M
B. Write whether the following are reversible or irreversible changes:-
i. Melting of ice
ii. Changing of water into its vapours
C. Show the interchange of the three states of water.

SECTION D

9. Choose the most appropriate answer:
A. Which is a correct set of parts of a pistil?
i. Filament and anther
ii. Ovary, style, stigma
iii. Ovary, stigma, filament
iv. Ovary, anther, filament

B. On a hot summer day the leaves of a plant drop down because:-
i. The plant becomes weak.
ii. Excessive transpiration takes place.
iii. Excessive photosynthesis takes place.
iv. No transpiration occurs.

C. A potter shapes pots out of clay (Process 1). He then bakes the pots in an oven (Process 2).
Which of the following statement is correct?
i. Process 1 is reversible change while process 2 is an irreversible change.
ii. Process 1 is an irreversible change while process 2 is a reversible change.
iii. Both are irreversible changes.
iv. Both are reversible changes.

D. Threshing is done by:-
i. Sieve
ii. Cloth
iii. Filter paper
iv. Beating

E. Which of the following does not have tap roots?
i. Carrot
ii. Turnip
iii. Wheat
iv. Radish

F. Rohan tore a sheet of paper into pieces and then burnt them. Identify the irreversible change taking place in the process.
i. Tearing of sheet into pieces
ii. Burning of the torn sheet pieces
iii. Both burning and tearing
iv. None of these

G. Salt from water is separated by:-
i. Sieving
ii. Evaporation
iii. Filtration
iv. Sedimentation

H. Property which forms basis of sieving is:-
i. Difference in colour.
ii. Difference in size.
iii. Difference in weight.
iv. Difference in smell.

10. Read the two Assertion and Reasoning questions given below carefully and choose the appropriate option.
A. Assertion (A): There is a small gap left between the rails of a railway track.
Reason(R): Cooling of substances results in contraction.
i. Both A and R are true and R is the correct explanation of A.
ii. Both A and R are true but R is not the correct explanation of A.
iii. A is true but R is false.
iv. A is false but R is true.

B. Assertion (A): When carrying out the experiment of covering leaf of a plant with a plastic bag , droplets of water were observed inside the bag containing the leaf.
Reason(R): Water is released in the form of vapour through the leaves by a process known as Photosynthesis.

i. Both A and R are true and R is the correct explanation of A.
ii. Both A and R are true but R is not the correct explanation of A.
iii. A is true but R is false.
iv. A is false but R is true.