Bond angle of water reduced to `104^@.27'` from `109^@.28'` said Rajesh. Is he correct? Justify your answer.

‘Bond angle of ammonia reduced to 107^@48' from 109^@28' , said Ramya. Is she correct? Justify your answer.

The median of observation, -2 ,5,3, -1 ,4,6,is 3.5" .Is it correct?Justify your answer.

From an external point two tangents are drawn to a circle.A line joining the external point and the centre of the circle bisects the line between the tangents. Is this true or not? Justify your answer.

A person holds a bundle of hay over zero his head of 30 minutes and get tired. Has he done some work or not ? Justify your answer.

If the angle of elevation of sun increases from '0' to 90 then the length of shadow of a tower decreases. Is this true? Justify your answer.

Raju and Bharath add their money and bought 20 pencils. Raju contributed Rs12 and Bharath Rs18. They wanted to distribute the pencils between them. (i) Bharath said 10 pencils for each (ii) Raju said 12 pencils for Bharath and 8 pencils for him. Who is correct? justify your answer.

The bond angle in XeO_3 molecule decreases from 109^@28^1 to 1030^@ due to

Is it the sum of any two angles of a triangle is always greater than the third angle? Give examples to justify your answer.

Is 'zero' a term of the Arithmetic Progression 31, 28, 25, ….? Justify your answer.

Mahesh said that the sum of the two angles 30^@ and 150^@ is 180^@ hence they are linear pair do you agree justify your answer.