Three nonoverlapping sectors of a circle with radius 7 cm have angles 60°,80°,40°. Find their combined area, using π=22/7.
Correct!
The answer is A, 77 cm².
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Three nonoverlapping sectors of a circle with radius 7 cm have angles 60°,80°,40°. Find their combined area, using π=22/7.
Correct!
The answer is A, 77 cm².
Find the zeroes of √3 x²+10x+7√3.
Correct!
The answer is A, −√3 and −7/√3.
Find the point on the y-axis equidistant from (5,−2) and (−3,2).
Correct!
The answer is D, (0,−2).
In trapezium ABCD with AB∥CD,diagonals meet at O. A line through O parallel to the bases meets AD at E and BC at F. Which relation follows?
Correct!
The answer is A, AE/ED=BF/FC.
Assertion(A):The midpoint(x,y) ofA(3,4),B(k,6) satisfies x+y−10=0,so k=7. Reason(R):The midpoint of(x₁,y₁),(x₂,y₂) is((x₁+x₂)/2,(y₁+y₂)/2).
Correct!
The answer is B, Both A and R are true and R explains A..
How many covalent bonds occur in one propane molecule, C₃H₈?
Correct!
The answer is D, 10.
Why did Gandhi oppose separate electorates for Dalits during his disagreement with B.R. Ambedkar?
Correct!
The answer is C, He believed they would delay integration of Dalits into society.
Assertion: In a democracy people should choose and control their rulers. Reason: A basic democratic outcome is a government accountable and responsive to citizens. Which assessment is best?
Correct!
The answer is D, Both are true, and the reason explains the assertion.
What attracted industrialists to Civil Disobedience?
Correct!
The answer is A, Protection from foreign imports, a favourable rupee–sterling ratio and freedom from colonial restrictions.
In what form are minerals commonly extracted when concentration makes recovery commercially viable?
Correct!
The answer is D, Ores.
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