NMDCAT Chapter 2 Practice TestAttempt your Practice test and see the results to know your preparation level. 78 Dear Students 25 minutes are given to solve 25 MCQs.Your result will be displayed at the end of the quiz. Created by Umair Ali khan NMDCAT Chemistry Chapter 2 Practice Test 1 / 251) Which of following violates Hund's rule a) 1s², 2s², 2px¹, 2py¹, 2pz0 b) 1s², 2s², 2px², 2py0, 2pz0 c) 1s², 2s², 2px², 2py², 2pz² d) 1s², 2s¹ 2 / 252) The deflection of positive rays in the magnetic field will be a) Toward the north pole b) Towards the south pole c) Towards cathode d) Perpendicular to magnetic field 3 / 253) Mass of one mole of proton is approximately equal to a) 1.0073 amu b) 1.008 g c) 1.0087 amu d) 1.6726 10-24 g 4 / 254) Charge on 1 mole of proton is a) 96500C b) +1.6022 × 10-19C c) 1.7588 × 1011C d) 9.1095 x 1016C 5 / 255) The electron in K-Shell can be distinguish by a) Principal quantum number b) Azimuthal quantum number c) Magnetic quantum number d) Spin Quantum number 6 / 256) The correct set of quantum numbers for the valance electron of Na is a) n = 3 l= 2 m=0 S = +1/2 b) n = 3 l=0 m=0 S=+1/2 c) n=3 l=2 m=0 S = -1/2 d) n = 3 l=2 m = +1 S = +1/2 7 / 257) λ of indigo colour is 400nm approximately. The wave number of the above-mentioned colour will be. a) 400 x 10-9m-1 b) 2.5 x 10+6m-1 c) 2.5 x 10-5m-1 d) 2.5 x 10-4m-1 8 / 258) The quantum of energy is called photon in the case of a) Heat b) Sound c) Wave d) Light 9 / 259) Which of the following is true relationship between principal and azimuthal quantum number? a) n is equal to l b) n is larger than l c) n is smaller than l d) n is equal to +1 10 / 2510) The number of waves per unit length is called a) Frequency b) Wave length c) Wave crust d) wave number 11 / 2511) Atoms of two different elements having same nucleon number but different proton number are called a) Isotopes b) Isotones c) Isobars d) Isoelectronic 12 / 2512) When an atom goes in excited state it violates a) Aufbau principle b) Hund's rule c) Pauli's exclusion principle d) All of these 13 / 2513) When 6d orbital is complete, the entering electron goes into a) 7f b) 7s c) 7p d) 7d 14 / 2514) The atomic number of an element having maximum number of unpaired electrons in p-subshell, is a) 7 b) 10 c) 12 d) 16 15 / 2515) A di-valent cation having 10 electrons and 24 nucleon number. The number of neutrons are a) 11 b) 12 c) 10 d) 24 16 / 2516) Minimum number of electron in N-shell are a) 22 Ti b) 23 V c) 24 Cr d) 25 Mn 17 / 2517) The number of orbitals accommodated in the nth energy level is given by a) n+2 b) 2n c) 2n2 d) n2 18 / 2518) The nature of canal rays depends upon a) Composition of glass b) Composition of electrode c) Gas inside the discharge tube d) All of these 19 / 2519) Number of subshells in a shell are determined by using a) n b) 2n2 c) n2 d) n2/2 20 / 2520) The e/m of which pair will be same a) H2+, He+ b) N2+, CO+ c) NH3+, O2+ d) O2+, SO2+ 21 / 2521) A hypothetical element carrying a -2 charge contains 27 electrons and 50 mass number. Its atomic number will be a) 25 b) 26 c) 27 d) 24 22 / 2522) An element X has the configuration 1s², 2s², 2p5.. In its chemical reactions it is most likely to a) Gain three electrons b) Lose one electron c) Lose three electrons d) Gain one electron 23 / 2523) Number of subshells and orbitals in N-shell are _____and ______ respectively. a) 4,4 b) 4,8 c) 4,12 d) 4,16 24 / 2524) The ratio between energy and frequency of photon is a) Wave number of photon b) Wave length of photon c) Speed of photon d) Plank's constant 25 / 2525) Positive rays are produced a) by burning of gas b) By cooling of the gas c) By the bombardment of cathode rays on gas molecules d) From anode like cathode rays, produced from cathode Write your Name and see your result. My WhatsApp no is +923099164667 for your query. Your score isThe average score is 61%Share to your social media, or take a screenshot Facebook 0% Restart quiz Exit See review Send feedback Pages: 1 2 3 4 5 6 7 8 9 10 11 This Post Has 6 Comments Umair Ali khan July 26, 2022 Reply Dear students write your questions here. Hifsa Pervez October 1, 2022 Reply Shapes of orbitals were explained by magnetic or azimuthal quantum number? Answer below the question is given magnetic quantum number but in the explanation video of this question answer is given azimuthal quantum number. Umair Ali khan October 5, 2022 Reply Azimuthal. The discussion has correct answers. Please mention the question number, therefore, it is corrected. Haseeb UR Rehman July 26, 2022 Reply In ethanol and methanol, which has greater hydrogen bonding? Umair Ali khan July 28, 2022 Reply Methanol Hifsa Pervez October 7, 2022 Reply MCQ no.26Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment. Sign me up for the newsletter! Δ
Hifsa Pervez October 1, 2022 Reply Shapes of orbitals were explained by magnetic or azimuthal quantum number? Answer below the question is given magnetic quantum number but in the explanation video of this question answer is given azimuthal quantum number.
Umair Ali khan October 5, 2022 Reply Azimuthal. The discussion has correct answers. Please mention the question number, therefore, it is corrected.
Dear students write your questions here.
Shapes of orbitals were explained by magnetic or azimuthal quantum number? Answer below the question is given magnetic quantum number but in the explanation video of this question answer is given azimuthal quantum number.
Azimuthal. The discussion has correct answers. Please mention the question number, therefore, it is corrected.
In ethanol and methanol, which has greater hydrogen bonding?
Methanol
MCQ no.26