CBSE Class 9 Notes
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Q2/10: If x = 2 + sqrt(3), find the value of x + 1/x.
Anonymous Quiz
22%
2
11%
4
44%
2 sqrt(3)
22%
4 sqrt(3)
Q3/10: The degree of the polynomial 4x^4 + 0x^5 + 5x + 7 is:
Anonymous Quiz
8%
4
54%
5
15%
1
23%
0
Q4/10: Find the zero of the polynomial p(x) = 2x + 5.
Anonymous Quiz
22%
2/5
33%
5/2
44%
-5/2
0%
-2/5
Q5/10: A rectangular field has an area represented by x^2 - 7x + 10. Possible expressions for length and breadth are:
Anonymous Quiz
33%
(x - 2) and (x - 5)
33%
(x + 2) and (x + 5)
17%
(x - 1) and (x - 10)
17%
(x + 1) and (x + 10)
Q6/10: If x + y + z = 0, then x^3 + y^3 + z^3 is equal to:
Anonymous Quiz
33%
0
11%
xyz
33%
2xyz
22%
3xyz
Q7/10: The point (-3, 5) lies in which quadrant?
Anonymous Quiz
15%
First Quadrant
69%
Second Quadrant
15%
Third Quadrant
0%
Fourth Quadrant
Q8/10: The perpendicular distance of the point P(3, 4) from the y-axis is:
Anonymous Quiz
20%
3 units
40%
4 units
30%
5 units
10%
7 units
Q10/10: Which phenomenon is responsible for the cooling effect of an earthen pot during summer?
Anonymous Quiz
7%
Sublimation
7%
Osmosis
43%
Evaporation
36%
Condensation
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Q3/10: Which of the following is a homogeneous mixture?
Anonymous Quiz
25%
Soil
5%
Blood
60%
Sugar solution
5%
Milk
Q4/10: Which technique separates miscible liquids with a boiling point difference of less than 25K?
Anonymous Quiz
15%
Simple distillation
62%
Fractional distillation
8%
Chromatography
8%
Separating funnel
Q6/10: Assertion (A): A colloidal solution shows Tyndall effect. Reason (R): Particles are large enough to scatter a light beam.
Anonymous Quiz
36%
Both A and R are true and R is correct explanation
36%
Both A and R are true but R is not correct explanation
18%
A is true but R is false
9%
A is false but R is true
Q7/10: What is the atomicity of ozone (O3)?
Anonymous Quiz
8%
1
31%
2
62%
3
0%
4
Q8/10: What is the formula mass of calcium chloride (CaCl2) given Ca=40u and Cl=35.5u?
Anonymous Quiz
17%
75.5 u
42%
111 u
33%
115 u
8%
120 u
Q9/10: When did the fall of the Bastille occur, marking the beginning of the French Revolution?
Anonymous Quiz
8%
5 May 1789
69%
14 July 1789
8%
20 June 1789
15%
4 August 1789
Q10/10: Who wrote 'The Social Contract'?
Anonymous Quiz
11%
Montesquieu
22%
Voltaire
44%
Rousseau
22%
John Locke