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          All posts related to Chemistry

          Mayuri Yelkdare
          Shared from Chemistry (Practice Test) on Jan 02, 2019 3:17 PM

          The density of a gas is 1.964 g dm-3 at 273K and 76 cm Hg. The gas is

           
          CH 4
          C2H 6
          CO 2
          Xe
          Please type your answer before submitting.
          Mayuri Yelkdare

          How to solve this

          Abhishek Manu Saxena.
          Shared from TH-Chemistry on Dec 18, 2018 3:43 PM

          The arrangement of X- ions around A+ ion in solid AX is given in the figure (not drawn to scale).
          If the radius of X- is 250 pm, the radius of A+ is approximately

           
          104 pm
          125 pm
          183 pm
          57 pm
          Please type your answer before submitting.
          Abhishek Manu Saxena.

          Post.414*250 is 103.5 and the max radius can be .732*250= 183

          View More
          Varshita Kolipaka
          Shared from 11. S Block(11)_old on Dec 07, 2018 1:59 PM

          The oxide of an element with its outermost shell electronic configuration of ns1 and ns2 with no d electron in the penultimate shell has

           
          basic character
          neutral characteric
          amphoteric nature
          acidic character
          Please type your answer before submitting.
          Varshita Kolipaka

          Isnt aluminium an example of this? and if so shouldnt the answer be amphoteric?

          Pavan
          Shared from Chemical Bonding on Dec 03, 2018 12:42 PM

          CaC2 is associated with which types of bonds?

           
          One sigma and two pi
          One sigma and one pi
          Two sigma and one pi
          Two sigma and two pi
          None of these
          Please type your answer before submitting.
          Pavan

          Diagram

          Aryan Kabra
          Posted on Nov 30, 2018 7:52 AM

          If 0.5 mol of is mixed with 0.2 mol of , the maximum number of moles of that can be formed is

           
          0.7
          0.5
          0.30
          0.10
          Please type your answer before submitting.
          Aryan Kabra

          Question is not complete