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Changes Around Us
Changes Around Us- 6th Std Science Term - I
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Question 1 |
Release of the compressed spring is_____
an irreversible change | |
a reversible change | |
a non-periodic change | |
an undesirable change |
Question 2 |
Spoilage of food is______
a reversible change | |
a fast change | |
an undesirable change | |
a periodic change |
Question 3 |
Dissolution of washing soda in water is______
an exothermic change | |
an irreversible change | |
an undesirable change | |
an endothermic change |
Question 4 |
Which of the following changes is non-periodic?
heartbeat | |
earthwuake | |
occurance of day and night | |
oscillation of pendulum |
Question 5 |
Who was the first Indian woman travelled to the space?
Marie Curie | |
Indira Nooyee | |
Kalpana Chawla | |
Saira |
Question 6 |
Which of the following statement is correct?
Our body loses weight in space | |
Ourbody gains weight in space | |
Our eye sight becomes dull | |
All are correct |
Question 7 |
The time taken for a tree to turn into coal under the earth is______.
34 years | |
3400 years | |
34000 years | |
30 crore years |
Question 8 |
Which of the following is a slow change?
Burning of paper | |
Brusting of crackers | |
Rusting of iron | |
Glowing of electric bulb |
Question 9 |
Which of the following is a fast change?
Growth of a child | |
Brustin of crackers | |
Germination of seed | |
Curdling of milk |
Question 10 |
Which of the following is a reversible change?
Batter into idly | |
Green vegetables into cooked food | |
Making of ornaments from gold | |
Curdling of milk |
Question 11 |
Which of the following is an irreversible change?
Evaporation of water | |
Melting of ice | |
Making ornaments from silver | |
Ripening of fruits |
Question 12 |
Which of the following is a desirable change?
Earthwuake | |
Accident | |
Blooming of volcano | |
Landslide |
Question 13 |
Which of the following is a periodical change?
Heart beat | |
Earthquake | |
Eruption of volcano | |
Landslide |
Question 14 |
Which of the following is a non-periodical change?
Oscillation of pendulum | |
Phases of moon | |
Occurrence of day and night | |
Earthquake |
Question 15 |
The reactions in which heat is liberated are called ____ reactions.
Endothermic | |
Exothermic | |
Adiabatic | |
Isothermic |
Question 16 |
The reactions in which heat is absorbed are called ____ reactions.
Endothermic | |
Exothermic | |
Adiabatic | |
Isothermic |
Question 17 |
In some changes, the substance can be brought back to its original state. Such changes are called _____ changes.
Periodic | |
Non-periodic | |
Undesirable | |
Reversible |
Question 18 |
Changes that are useful are called ____changes.
Periodic | |
Desirable | |
Undesirable | |
Irreversible |
Question 19 |
Dissolution of glucose in water is an example of_______ reaction
Adiabatic | |
Isothermal | |
Edothermic | |
Exothermic |
Question 20 |
When Ammonium chloride is dissolved in water _____ is absorbed.
Mass | |
Heat | |
Time | |
Salt |
Question 21 |
Dissolution of quick lime in water is an example of _______ reaction.
Exothermic | |
Endothermic | |
Isochronous | |
Isobaric |
Question 22 |
Dissolution of detergent powder in water is an example of _____ reaction.
Exothermic | |
Endothermic | |
Isochronous | |
Isobaric |
Question 23 |
Curdling of milk is an ______ change.
periodic | |
irreversible | |
reversible | |
non-periodic |
Question 24 |
Ripening of fruit is ______ change.
desirable irreversible | |
irreversible | |
reversible | |
non-periodic |
Question 25 |
Burning of paper is a________ change.
fast | |
slow | |
absorbed | |
none |
Question 26 |
Kalpana Chawla was the _______ who travelled to the space.
first Indian woman | |
Second American woman |
Question 27 |
She went round the world within _____
13 Hours | |
2 Days | |
one and half hours |
Question 28 |
Useful changes are called ______
Undesirable changes | |
desirable changes |
Question 29 |
Velco was invented in the year _____
1948 | |
1943 | |
1947 | |
1949 |
Question 30 |
Velco is widely used in _______
foot wear | |
Hand Wear |
Question 31 |
Dissolution of glucose is an ______
Exothermic | |
endothermic |
Question 32 |
Trees which are buried under the earth are turned into _____
coal | |
Petrolium | |
Gold |
Question 33 |
Release of compressed spring is _______
reversible | |
Irreversible |
Question 34 |
Match the following
- Burning of paper a. Desirable change
- Rusting of iron b. Reversible change
- Melting of ice c. Slow change
- Ripening of fruits d. fast change
1 3 4 2 | |
4 3 2 1 | |
2 3 4 1 | |
3 2 4 1 |
Question 35 |
Match the following
- Melting of Gold a. Reversible change
- Melting of Tar b. Irreversible change
- The batter from Idly or dosa c. Undesirable change
- Eruption of volcano d. Reversible change
1 3 4 2 | |
4 3 2 1 | |
2 3 4 1 | |
3 2 4 1 |
Question 36 |
Match the following
- Earth quake a. Endothermic changes
- Weather b. Non-periodic changes
- Buring of match stick c. Periodic changes
- Dissolution of glucose d. Exothermic changes
1 3 4 2 | |
4 3 2 1 | |
2 3 4 1 | |
4 1 2 3 |
Question 37 |
Match the following
- Full moon and New moon a. Exothermic changes
- Weather b. Endothermic changes
- Buring of match stick c. Periodic changes
- Dissolution of glucose d. Periodic changes
2 3 4 1 | |
3 4 1 2 | |
1 3 4 2 | |
4 1 2 3 |
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