Upsee

Gravitational force acts on a particle due to fixed uniform solid sphere. Neglect other forces. Then particle : 

(A) experiences a force directed along the radial direction only. 

(B) always moves normal to the radial direction 

(C) always moves in the radial direction only. 

(D) always moves in circular orbit.

Intramolecular hydrogen bond is present in 

(a) water 

(b) o-nitrophenol 

(c) p-nitrophenol 

(d) methylamine 

Which reaction will not occur out of the following?

(A) Fe + H₂SO₄ → H₂ + FeSO₄ 

(B) Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag 

(C) 2KBr + I₂ → 2KI + Br₂ 

(D) CuO + H₂ → Cu + H₂O

Permanent magnet has properties retentivity and coercivity respectively, 

(a) low-low 

(b) high-high 

(c) high-low 

(d) low-high

A chord of the parabola y = x² – 2 + 5 = joins the point with the abscissas x₁ x 1 , x₂ =  3 Then the equation of the tangent to the parabola parallel to the chord is :

(A)   2x  – y + 5/4  = 0

(B)   2x – y + 2 = 0

(C)   2x – y + 1 = 0

(D)   2x + y + 1 = 0

Which compound will be most reactive for electrophilic addition reaction? 

(A) CH₃ – CH = CH – CH₃ 

(B) CH₃ – C C≡ CH₃ 

(C) CH₃–CH = CHCOOCH₃

Zn converts from its melted state to its solid state, it has hcp structure, then the number of nearest atoms will be 

(A) 6 

(B) 8 

(C) 12 

(D) 4

Most reactive alcohol towards esterification is 

(A) Primary alcohol 

(B) Secondary alcohol 

(C) Tertiary alcohol 

(D) All are same reactive

A method of removing excess solute from a colloidal solution is 

(A) Distillation 

(B) Crystallization 

(C) Dialysis 

(D) Gas chromatography

Van der waals’ real gas, acts as an ideal gas atwhich condition? 

(a) High temperature. low pressure 

(b) Low temperature, high pressure 

(c) High temperature, high pressure 

(d) Low temperature, low pressure