GOKUL ACADEMY OF SCIENCE15 Near Gajanan High School New Subhedar Lay-out Nagpur-24

PhNo0712-2743707 amp 6466067

Date 06-01-2012 Gokul Retrospection sheet 04

Std XII - State

( GRS -04)

Biology

Q1

Ultrafilteration (M-02)

Q2

Tubular Secretion(Renal Secretion) (M-02)

Q3

Explain role of kidney in osmoregulation (M-04)

Chemistry

Q1 What is the action of the following on phenol

i) dil HNO3 at RT

ii) con HNO3 at 373 k iii) H2 SO4 at RT

iv) H SO at 373 k

Physics

Q1 Write expression for variation of g With depth and latitude

Q2 What is communication satellite

Mathematics Q1 Prove that 2 sin ( π 4 + 0 ) = cos θ+ sin θ

Q2 1 + tan θProve that tan ( π 4 + 0 ) = 1 ndash tan θ

Q3 Prove that sin ( θ- π 6) + cos ( θ - π 3) = 3 sinθ

Q4 Prove that cos(350 + A) cos (350 ndash B) + sin (350 + A) sin (350 - B) = cos(A+B)

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