UPSEE 2017 Question Paper with detailed Solutions and Answer Key Released, check here

The first shift of Uttar Pradesh State Examination (UPSEE/UPTU) 2017 Examination was held on April 16, 2017. The question paper with its detailed solution and answer key has been released on the official website of UPSEE. According to the feedback of students, the difficulty level of this paper was moderate Students can download UPSEE/UPTU 2017 Question Paper and its detailed solution from this article. This paper will be very useful for those who are going to appear for the exam on 22 and 23 April 2017.

Few questions from the Question Paper are given below:

Q.  A  light  beam  consists  of  two  types  of  photons. In  one  type  each  photon  has  energy    2eV  and  in other  type  each  photon  has  energy  3eV.  The  light beam  is  incident  on  a  photoelectric    material  of work  function  1eV.  The  maximum  kinetic  energy of  emitted  photoelectron  is  :

  (A)  1eV 

(B)  2eV  

(C)  3eV 

(D)  4eV

Correct Option: (B)

Sol.

KE _max = hν_max - Φ = 3 - 1 = 2 eV

Q.  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.

Correct Option: (A)

Sol.

Circular motion is a special case in gravitational field. There may be straight line,elliptical paths, but  force will be always directed toward the centre of the sphere.

Q.   Which of the following statement is correct ?  

(A)  BCl₃ and AlCl₃ are both Lewis acids and BCl₃ is stronger than AlCl₃

 (B) BCl₃ and AlCl₃ are both Lewis acids and AlCl₃ is stronger than BCl₃

(C) BCl₃ and AlCl₃ are both equally strong Lewis acid

(D) Both BCl₃ and AlCl₃ are not Lewis acids.

Correct Option: (A)

Sol.

BCl₃ and AlCl₃ both  are  Lewis  acids  but  BCl₃  is  more  electron  deficient  than AlCl₃  so  BCl₃  is stronger Lewis acid than AlCl₃ due to high electron negativity.(E.N. B-2.0,Al 1.5)

Q.   Given  y = x² . As  x→2, y→4 what must the value of δ be for which from | x – 2 |< δ it follows that

| y – 4 | < ∈ = 0.001 ?

  (A)  0 < δ < 0.00025 

(B)  0.03 < δ < 0.05  

(C)   0.2 < δ < 0.25 

(D)  0.4< δ < 0.5

Sol.

Using,

| x – 2 |< δ, we get | y – 4 | < δ(δ + 4), which is less than ∈

So, δ < √(∈ + 4) - 2

For , ∈ = 0.001, the δ < 0.00025

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