CBSE (Central Board of Secondary Education) Class-7 Science: Questions 56 - 60 of 322
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Question 56
Question MCQ▾
The indigested food from small intestine cannot be absorbed by the blood and is passed to the:
Choices
Choice (4) | Response | |
---|---|---|
a. | Large intestine | |
b. | Anus | |
c. | Colon | |
d. | Rectum |
Question 57
Question MCQ▾
Fibres manufactured through chemical processes by man are called as:
Choices
Choice (4) | Response | |
---|---|---|
a. | Man-made fibres | |
b. | Synthetic fibres | |
c. | Artificial fibres | |
d. | All a., b. and c. are correct |
Question 58
Question MCQ▾
Prevention taken to prevent tooth decay and for maintaining dental hygiene are:
Choices
Choice (4) | Response | |
---|---|---|
a. | Rinse your mouth with saline water after every meal and never put dirty fingers and unwashed object in the mouth AND Clean your teeth with a brush and dental floss | |
b. | Eat food items rich in calcium and phosphorus | |
c. | Avoid eating sticky and sugary items such as chocolates, sweets and cold drinks | |
d. | All a., b. and c. are correct |
Question 59
Question MCQ▾
Convection is:
Choices
Choice (4) | Response | |
---|---|---|
a. | Mode of transfer of heat in a fluid | |
b. | In convection the molecules themselves carry heat from hotter region to a colder region | |
c. | Both a. and b. are correct | |
d. | Question does not provide sufficient data or is vague |
Question 60
Question MCQ▾
A change whereby only the physical properties of a substance undergo a change is called as:
Choices
Choice (4) | Response | |
---|---|---|
a. | Exothermic reaction | |
b. | Chemical change | |
c. | Endothermic reaction | |
d. | Physical change |