Free MCQs & Online Quiz Practice for Exams

Q: In the compounds CO₂ and H₂O the hybridization of oxygen is respectively: (ETEA 2018)

A) sp² & sp²

B) sp² & sp³

C) sp³ & sp³

D) sp³ & sp²

Q: Which species has maximum number of unpaired electrons? (ETEA 2019)

A) O

B) O₂

C) O₂⁺

D) O₂²⁻

Q: Which statement about the following molecules is incorrect? (ETEA 2019)

A) NH₃ is pyramidal

B) CO₂ is linear

C) H₂O is angular

D) H₂S is linear

Q: The molecule having zero dipole moment among the following: (ETEA 2019)

A) NH₃

B) SnCl₄

C) PH₃

D) CCl₄

Q: A molecule with two lone pairs & two bond pairs on central atom has geometry: (ETEA 2019)

A) Tetrahedral

B) Angular

C) Linear

D) Trigonal pyramidal

Q: Which of the following is an example of vector product of two vectors? (Entry test 2010)

A) Linear momentum

B) angular momentum

C) Force

D) Electric flux

Q: The angle subtended by a vector A = i − j with x-axis is (Entry test 2010)

A) 45°

B) 135°

C) 225°

D) 315°

Q: The minimum number of unequal forces whose vector sum can be zero are (Entry test 2010)

A) one

B) Two

C) Three

D) Four

Q: The magnitude of the resultant of two forces is 2F. If the magnitude of each force is F, then the angle between these forces is (Entry test 2010)

A) 0°

B) 90°

C) 120°

D) 180°

Q: Two forces of magnitude 20 N and 10 N act at a point then which one of the following cannot be their possible sum? (Entry test 2012)

A) 30 N

B) 10 N

C) 15 N

D) 35 N

Q: Which one of the following is not a vector quantity? (Entry test 2012)

A) electric field intensity

B) gravitational field intensity

C) magnetic induction

D) electromotive force

Q: Two equal, parallel and non-concurrent forces that produce only angular acceleration are (Entry test 2012)

A) couple

B) couple arm

C) collinear forces

D) torque

Q: The minimum number of forces that keep the body in equilibrium are (Entry test 2012)

A) two

B) three

C) four

D) five

Q: If two forces P and Q are such that |P + Q| = |P − Q|, then the angle between P and Q is (Entry test 2009/2012)

A) 0°

B) 30°

C) 90°

D) 180°

Q: Two concurrent forces have a maximum resultant of 45 N and minimum resultant of 5 N. What is the magnitude of each force? (Entry test 2009)

A) 0,45N

B) 5,9 N

C) 20,25 N

D) 20,45 N

Q: How are two vectors of the same magnitude oriented to get a resultant of the same magnitude? (Entry test 2009)

A) 90°

B) 60°

C) 45°

D) 120°

Q: If Ā = 2î + ĵ + 2k̂, then its magnitude is (Entry test 2010)

A) 9

B) 5

C) 3

D) 1

Q: The angle subtended by a vector Ā = î − ĵ, with x-axis is (Entry test 2010)

A) 45°

B) 135°

C) 225°

D) 315°

Q: ĵ · (k̂ × ĵ) is equal to (Entry test 2010)

A) -1

B) zero

C) 1

D) 2

Q: Three vectors of equal magnitude are acting on the three sides of an equilateral triangle. The magnitude of their resultant is (Entry test 2011)

A) zero

B) 3

C) √3

D) 1.73