Online NAT IE Pre Engineering Chemistry Test Preparation for Pakistani Students

NAT I Engineering Chemistry

Sr. #	Questions	Answers Choice
1	With increasing principle quantum number the energy difference between adjacent energy levels in H atom	Decreases Increases Remains constant Decreases for low value of Z and increases for higher value of Z.
2	The ratio of close packed atoms to tetrahedral holes in cubic close packing is	1 : 1 1 : 2 1 : 3 2 : 1
3	Potassium crystallizes with a	Orthogonal lattice Cubic lattice Triclinic Ortho rhombic lattice
4	How many kinds of space lattices are possible in a crystal?	23 7 230 14
5	In a crystal a ≠ b ≠ c, a = γ = 90° and β ≠ 90°, it is	Monoclinic Rhombic Trigonal Tetragonal
6	Bragg's law is given by equation	n λ = 2 θ sin θ n λ = 2 d sin θ 2nλ = d sin θ nλ = 1/2 d sin θ
7	In crystal structure of sodium chloride the arrangement of CI^- ions is	Fee Both fee and bcc Bee None of these
8	Crystal can be classified in to basic crystal habits	7 4 14 3
9	Ionic solids with defects contain	Equal number of cation and anion vacancies Interstitial anions and anion vacancies Cation vacancies only Cation vacancies and interstitial cations
10	Which of the following is an example of body centred cube?	Magnesium Zinc Copper Sodium