π8π₯°2
A beam of light incident on a plane mirror forms a real image on reflection. The incident beam is
Anonymous Quiz
43%
Parallel
33%
Convergent
19%
Divergent
4%
None
π6π₯1
A student conducts an experiment using a convex lens. He places the object at a distance of 60 cm in front of the lens and observes that the image is formed at a distance of 30 cm behind the lens. What is the power of the lens?
Anonymous Quiz
19%
0.005dipoter
44%
0.05dipoter
26%
0.5dipoter
11%
5 dipoter
π7π4π₯3β€2π₯°2π1
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π On-call support of Shubham Jha
Let's make Learning Easy!
π8
pH of basic solution is always β¦β¦β¦β¦. than 7.
Anonymous Quiz
29%
Less
50%
More
21%
Neutral
0%
None
π6π₯4π₯°4π2β€1
π11π4β€2π2π₯2
Among HCl, H2SO4 and CH3COOH, β¦β¦β¦β¦. is a weak acid.
Anonymous Quiz
12%
Ch3
28%
Hno3
51%
Ch3ooh
9%
None
π₯9π3π3π₯°2π2
Mixing an acid or base with water results in decrease in the concentration of per unit volume.
This process is called
This process is called
Anonymous Quiz
25%
H^+
33%
Oh^-
37%
Both
5%
None
π₯9π4β€2π2π₯°1
β¦β¦β¦. is one of the raw materials for the production of baking soda.
Anonymous Quiz
27%
Gypsm
45%
Nacl
18%
Hno3
10%
Hcl
π13π₯4π2π1π€1π1
The electronic configuration of three elements X, Y and Z are as follows:
X = 2, 4, Y = 2, 7, Z = 2,1 Which two elements will combine to form an ionic compound and write
X = 2, 4, Y = 2, 7, Z = 2,1 Which two elements will combine to form an ionic compound and write
Anonymous Quiz
22%
Xy
48%
Yz
16%
Zx
14%
Allll
π9β€4π₯°3π3
The atomic number of an element βXβ is 12. Which inert gas is nearest to X?
Anonymous Quiz
20%
He
30%
Ar
46%
Ne
5%
Xe
π9π₯°5π3π2
The process in which a carbonate ore is heated strongly in the absence of air to convert it into metal oxide is called
Anonymous Quiz
25%
Roasting
42%
Reduction
16%
Smelting
17%
Calcination
π6π₯°4π3β€2π₯1π1
An element X is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in air. It reacts vigorously with water. Identify the element from the following
Anonymous Quiz
19%
Mg
57%
Na
14%
P
10%
Ca
π9π₯°6β€3π2π2