Std-10 Most Imp Ch 2 Gseb L-15 જૈવિક ક્રિયાઓ

You are given three lenses L_(1),L_(2) and L_(3) each of focal length 10 cm. An object is kept at 15 cm in front of L_(1), as shown. The final real image is formed at the focus 'T' of L_(3). Find the separations between L_(1),L_(2) and L_(3).

Which of the following should be most volatile? I) CH_3 CH_2 CH_2 NH_2 II) (CH_3)_3 N III) IV) CH_3 CH_2 CH_3

Calculate molarity of NaOH in a solution made by mixing 2 L of 1.5 M NaOH,3 L of 2 M NaOH and 1 L water [Give your answer after multiplying by 10]

Calculate DeltaU for a gas, if enthalpy change is 40 atm-L for the state change (5 atm, 10 L) to (3 atm,15 L) :

CH_(3)CH_(2)l reacts more rapidly with strong base in comparison to CD_(3)CH_(2)l . Explain

Which of the most suitable reagent among the following to distinguish compound (III) from the rest of the compounds? (I) CH_2C-=C CH (II) CH_3CH_2CH_2CH_3 (III) CH_3CH_2C-=CH (IV) CH_3CH=CH_2