Very short answer type questions.
(a) Name the instrument used to measure temperature.
(b) What is the normal temperature of the human body!
(c) What is the use of a maximum-minimum thermometer?
(d) What is the SI unit of heat? (e) Give three examples of insulators.
Answers
Answer:
Assertion Reason type questions
Question number 1 to 5 are are Assertion(A)-Reason(R) type questions. In each of the following question a statement of Assertion is given by the corresponding statement of Reason.
Mark the correct answer as-
(a)lf both assertion and reason are true and reason is correct explanation of assertion
(b)Both assertion and reason are true but reason is not the correct explanation of assertion
(c) Assertion is true but reason is false
(d) Assertion is false but reason is true
(e) Both assertion and reason are false
Q1. (A) Robert brown discovered nucleus
(R) Nucleoplasm And Cytoplasm Of A Living Cell Together Form The Cytoplasm
Q2. (A) Lysosomes are often called as suicidal bags of a cell
(R) Lysosomes contain hydrolytic enzymes capable of digesting cellular waste
Q3. (A) Displacement of body may be zero even when distance is not zero
(R) Displacement and distance both are scalar quantities
Q4. (A) Speed of a body is distance travelled in unit time
(R) Speed is always equal or greater than velocity
Q5. (A) The position time graph of an object in uniform motion is a straight line
(R) Uniform motion object covers equal distance in equal interval of time.
Answer:
a.thermometer
b.36 to 37 degree celcius
c. A maximum–minimum thermometer is used to measure the daily temperatures in order to prepare weather reports. It is also known as Six’s thermometer
d.joules
e.Glass is the best insulator as it has the highest resistivity.
Plastic is a good insulator and it finds its use in making a number of things.
Rubber is a common material used in making tyres, fire-resistant clothes and slippers. This is because it is a very good insulator.
Explanation:
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