Answer these questions selecting the appropriate option given below:
a) Both A and R are true and R is correct explanation of A
b) both A and R are true but R is not correct explanation of A
c) A is true but R is false
d) A is false but R is true
14) Assertion - (A) : The number of moles of He in 52 g is 13
Reason - (R): The number of moles of an atom is the ratio of its ratio of its given mass to its molar mass.
15) Assertion (A) : Cells are structural and functional unit of life Reason ( R) : All organisms are made up of cells
Or
Assertion (A) : Humidity in air promotes growth of moulds like mucor Reason ( R) : Food grains are stored in silos on large scale.
16) Assertion(A) : Waste should be reused and recycled Reason (R): Inorganic wastes are used to form compost and manure
Answers
Answer:
sorry,I don't know the answer
Answer:
14(a),15(a) in the cell question and 15(b) in the moulds question , 16 (c)
Explanation:
14) molar mass of He = 4 g
given mass = 52 g
therefore, no. of moles = given mass / molar mass
= 52g/ 4g
= 13
∴ both assertion and reason is true and reason is correct explanation of Assertion
15(a)The cell is called the structural and functional unit of life as all living organisms are made up of cells.
'OR'
15 (b) due to humidity microbes get a better environment to grow rapidly.
food grains are stored in large quantities in silos so they can be protected from microbes . and can be stored for a longer period of time.
16 (a) yes, waste should be reused and recycled so the use of resources will get reduce.
compost and manure are made from organic wastes.