An aqueous solution of NaOH is electrolysed using Hg cathode and platinum anode. What are the products obtained at cathode and anode respectively?
Answers
Answer:
Debating is a team sport – you must work together when preparing you case and during the debate. Each speaker within the team has a certain role to play. It is important that each speaker understands and fulfils their role.
These speaker roles might sound a bit restrictive, but they help the debate run smoothly and clearly, so that everyone in the room understands what the debate is about and what each team stands for.
In each debate, there are two teams of three speakers. The team which argues for the topic is called the affirmative. The team arguing against the topic is called the negative. Each speaker speaks once for a defined period. The order of speakers is: first affirmative, first negative,
Answer:
Correct option is B)
Given:
ABCD is a cyclic quadrilateral with AB as the diameter of the circle.
Also, ∠ADC=140
o
.
We have to find: ∠BAC.
Then,
∠ADC+∠ABC=180
o
....(since the sum of the opposite angles of a quadrilateral is 180
o
).
∴∠ABC=180
o
−140
o
=40
o
.
Also, ∠ACB=90
o
....(since the angle subtended by a diameter at the circumference of the circle, is 90
o
).
∴ In ΔABC we have,
∠ACB=90
o
and ∠ABC=40
o
.
So, ∠CAB=180
o
−(∠ACB+∠ABC)
=180
o
−(90
o
+40
o
)
∴∠BAC=50
o
.