05vi) The answer to every MCQ should be written as Showrenonspect ,-0.1 A) Choose the correct option..... is used in balloons and in scuba divingHeliumb ) Oxygen c) Nitrogend) Ozonehen water boils and is converted into steam, then.........a) heat is taken in and temperature remains constantneat is taken in and temperatures risesneat is given out and temperature lowersThent is given out and temperature remains constant3 cut of the following .......... has the highest absolute refractive indexa fused quartzb) diamondtown glassd) rubyThe image formed by a concave lens is always ........virtual and erectb) real and erectc) virtual and inverledd) real and invertedO5. -C-OH is calleda) ketonic groupb) alcohol groupc) carboxylic acid group d) aldehyde group0.1 B) Solve the following question.051. Write true or false:The value of 'g' increases with altitude.2. Match the following column.Column 'AColuun 'B'i) Dobereinera) Octave ruleb) Triads rule3. Observe the following figure and write accurate conclusion regarding refraction of light​