Question 51 to 70.

Question

Q51) London force is also known as (A) dispersion force (B) Vander-Waals forces (C) hydrogen

bonding (D) covalent bonds

Q52) HCl is an example of (A) dipole-dipole interactions(B) dipole-induced dipole interactions

(C) London interaction (D) Vander waals interaction

Q53) When two species A and B forra an electron-pair bond and A does not provide its electrons for bonding, the bond present between A and B must ye(\Lambda)ionie (B) covalent (C) dative (D) Hydrogen

Q54) is a crystalline's basic repetitive structural unit. (A) Monomer (B) Molecule (C) Unit cell (D) Atom

Q55) Which type of crystal is formed by a combination of a cation and anion? (A) metallic (B) ionic (C) dipole-dipole

(D) covalent

Q56) The unit cell of a certain type of crystal is defined by three vectors a, b, and c. The vectors are mutually perpendicular but abc. The crystal structure is (A) monoclinic (B) triclinic (C) (C) orthorhombic (D) tetragonal

Q57 ) Which of the following axis system is being satisfied by cubic crystal systern? (\wedge)a=b=c, \alpha=\beta=\gamma=90^{\circ}C (B) a=b=c, =\beta=\gamma\mp90^{\circ}C(C)a=b\ne c,\alpha=3=\gamma=90^{\circ}C(L ) a=b=c \alpha\ne\beta\ne\gamma\ne90^{\circ}C

a Q58) If the atoms or molecules in a solid are periodical at regular intervals of distances in three dimensions, then that solid is known as: (A) crystalline solid (B) amorphous solid (C) liquid crystals (D) rione

Q59) The number of crystal systerns is: (A)5(B)7(C) 17 (D) 21

Q60) are those collisions that can lead to a chemical reaction (A) Non-effective (B) Effective (C) Frequencies

(D) A and B

Q61) Right orientation of molecules at the point of impacts is a characteristic of.. .collisions

(A) Non-effective (B) Effective (C) Frequencies (D) A and B

Q62) The isomerization of A to CH_{3}CH=CH_{2} requires... Jmol amount of activation energy (Ea). (A) 271850

(B) 285071 (C) 2580718 (D) Both. A and C

Q63) According to Svante Archenius, K is related to F by one of the following equations. (A)PV=KRT (B) K=AEF

(C) KAF (D) F=A/K

Q64) The rate law of a given reaction is defined as Rate =K_{3}[NO]^{2}[Br_{2}]. What is the overall order of the reaction?

(A)2(B)1(C)3(D)

Q65) made a conclusion that cathode rays consist of a beam of negatively charge electrons. (A) Joseph John

Thompson (B) John Joseph Thompson (C) Joe Joseph Thompson (D) none of these

Q66) Emest Rutherford carried out a series of experiments using very thin foils of gold and particles. (A) betr

alpha (C) gamma (D) delta

Q67) An atom is said to be electrically neutral when it contains (A) different number of positive and negative charges

(B) equal number of positive and negative charges (C) high number of positive charge (D) high number of negative

charges.

Q68) The number of protons plus number of electrons in the nucleus of an atom is called (A) Atomic number (B) mole

(C) mass number (D) none of these

Q69) The quickest and easiest way to represent a compound is with its (A) atomic number (B) mass number (C) chemical

formula (D) all of these

Q70) formula gives the actual number of atoms of each element in a molecule of a compound. (A) empirical

(B) molecular (C) structural (D) all of these

Answer 1

Q51) A) dispersion force.
Q52) A) dipole-dipole interactions.
Q53) C) dative.
Q54) C) Unit cell.
Q55) B) ionic.
Q56) C) orthorhombic.
Q57) A) a=b=c, α=β=γ=90°.
Q58) A) crystalline solid.
Q59) B) 7.
Q60) B) Effective.
Q61) B) Effective.
Q62) A) 271850 Jmol.
Q63) B) K=AEF.
Q64) C) 3.
Q65) A) Joseph John Thompson.
Q66) A) beta.
Q67) B) equal number of positive and negative charges.
Q68) A) Atomic number.
Q69) C) chemical formula.
Q70) B) molecular.