TS Polycet (Polytechnic) 2018 Previous Question Paper with Answers And Model Papers With Complete Analysis

Q). Which one of the following is caused due to “Screening effect”?
A) Increase in Ionisation Energy
B) Increase in Nuclear Charge
C) Decrease in Ionisation Energy
D) Decrease in Atomic Size

View Answer
C) Decrease in Ionisation Energy

Q). The number of d-block elements in the fourth period of the modem periodic table are ………….
A) 6
B) 8
C) 10
D) 18

View Answer
C) 10

Q). Which of the following is correct while going down the group in the periodic table?
A) Atomic number increases
B) Number of shells increases
C) Atomic radius increases
D) All the above

View Answer
D) All the above

Q). Which of the following elements is bigger in size compared to others?
A) K
B) Be
C) B
D) N

View Answer
A) K

Q). The condition for the formation of ionic bond between two atoms
A) Electronegativity difference is greater than 1.9
B) Similar electro positivity
C) Atoms of same size
D) Electronegativity difference is less than 1.9

View Answer
A) Electronegativity difference is greater than 1.9

Q). Which of the following molecules does not obey octet rule?
A) NH3
B) CH4
C) H2O
D) BeCl2

View Answer
D) BeCl2

Q). Lateral overlap of orbitals results in the formation of
A) σ – bond
B) Hydrogen bond
C) π – bond
D) Ionic bond

View Answer
C) π – bond

Q). The number of Ione pair electrons present in the valence shell of central atom of water molecule is
A) 2
B) 4
C) 3
D) 1

View Answer
A) 2
B) 4

Q). In which one of the following, bond angle is minimum?
A) BeCl2
B) BF3
C) CH4
D) NH3

View Answer
D) NH3

Q). Who proposed the ionic bond?
A) Lewis
B) Mosley
C) Pauling
D) Kossel

View Answer
D) Kossel

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