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A = πr2 = 3.14 x (0.5)2 cm2 = 0.785 cm2
l = 50 cm
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(1) प्राकृतिक आपदाओं से निपटने का सबसे बेहतर तरीका सतर्क रहना है। हमें मौसम की जानकारी रखनी चहिए एवं अपने आपको सुरक्षा तंत्र से जुड़ा रखना चाहिए।
(2) आपदाएँ किसी को बता कर नहीं आती इसलिए हमें चाहिए कि हमारी सरकार सभी प्रकार की आपदाओं से निपटने के इंतजाम कर ले।
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The relative lowering of vapour pressure is given by the following expression. psolvent0 -psolutionpsolvent0 =n2n1+n2
Where psolvent0 is the
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We know that dimensional formula of heat energy is It is given that,1 cal = 4.2J In SI system,   M1 = 1 kg, L1 = 1 m,  T1 = 1 s In new system of units
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Initial resistance , R = 4 Ω Resistance of a wire is given by R = ρLA . When the wire is doubled on itself, its le
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 S.I. unit of thermal conductivity is Watt/m/K or J/s/m/K.
CGS unit of K is cal/cm/sec/K or ergs/cm/sec/K.
Dimensional formula of thermal conductivity is [M1
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(a)
(i) Propanone to Propan-2-ol
 
 
(ii) Ethanal to 2-Hydroxypropanoic acid
 
 
 
(iii) Toluene to benzoic acid.
 
 
(b)
(i) Pentan-2-one and Pentan-3-


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बोर के सिद्धांत के अनुसार:
(i) परमाणु के केन्द्र में एक छोटा ( धनात्मक आवेश ) नाभिक होता है।
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(Get CBSE, ICSE and all State Boards textbook solutions for all subjects Class 8 to 12. You can also get CBSE solved papers of previous year from here! You can also prepare for SSC. Can also test SSC, find SSC Resource centre ! You can get resources online for free for NEET, NEET previous year solved paper and JEE, JEE Previous year solved papers! Student can also find the, previous year papers etc. This is an organization related to the education se