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An element ‘M’ with electronic configuration 2 8 3 combines separately with Cl- , SO4-2 anions. Write the chemical formulae of the compounds formed.

answered Nov 6, 2023 in Science by abhinav (17.6k points)

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A reddish-brown metal ‘X’, when heated in air, gives a black compound ‘Y’, which when heated in presence of H₂ gas gives ‘X’ back.

answered Nov 6, 2023 in Science by abhinav (17.6k points)

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What is the probability of a girl or a boy being born in a family?

answered Nov 6, 2023 in Science by abhinav (17.6k points)

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এছিড এটাৰ জলীয় দ্ৰৱই কিয় বিদ্যুৎ পৰিবহণ কৰে?

answered Jul 13, 2023 in Science by abhinav (17.6k points)

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দৈ আৰু টেঙা খাদ্যবস্তু পিতলৰ আৰু তামৰ পাত্ৰত থোৱা নহয় কিয়?

answered Jul 13, 2023 in Science by abhinav (17.6k points)

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টর্চ এটা জুলাই টৰ্চৰ মুখখন হাতেৰে ঢাকি ৰাখিলে হাতখন ৰঙা দেখি কিয়?

answered Jul 12, 2023 in Science by abhinav (17.6k points)

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Chlorine gas was prepared using electrolysis of brine solution. Write the chemical equation to represent the change.

answered Apr 25, 2023 in Science by abhinav (17.6k points)

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What is the probability of a girl or a boy being born in a family? Justify your answer

answered Apr 25, 2023 in Science by abhinav (17.6k points)

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Given below are certain situations. Analyze and describe its possible impact on a person: (a) Testes of a male boy are not able to descend into scrotum during his embryonic development.

answered Apr 25, 2023 in Science by abhinav (17.6k points)

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Suresh‟s parents have attached earl obes. What type of ear lobe can be seen in Suresh and his sister Siya?

answered Apr 25, 2023 in Science by abhinav (17.6k points)

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When light enters the atmosphere it strikes on extremely fine particles, which deflect the rays of light in all possible directions, This is due to

answered Apr 25, 2023 in Science by abhinav (17.6k points)

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In 1987, an agreement was formulated by the United Nations Environment Programme (UNEP) to freeze the production of “X” to prevent depletion of “Y”. “X” and “Y” respectively referred here are

answered Apr 25, 2023 in Science by abhinav (17.6k points)

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Which of the following features relates to biodegradable substances ?

answered Apr 25, 2023 in Science by abhinav (17.6k points)

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An object is placed in front of a convex mirror. Its image is formed

answered Apr 25, 2023 in Science by abhinav (17.6k points)

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A sportsman, after a long break of his routine exercise, suffered muscular cramps during a heavy exercise session. This happened due to

answered Apr 25, 2023 in Science by abhinav (17.6k points)

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Height of a plant is regulated by

answered Apr 25, 2023 in Science by abhinav (17.6k points)

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A farmer wants to grow banana plants genetically similar enough to the plants already available in his field. Which one of the following methods would you suggest for this purpose ?

answered Apr 25, 2023 in Science by abhinav (17.6k points)

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Receptors are usually located in sense organs. Gustatory receptors are present in

answered Apr 25, 2023 in Science by abhinav (17.6k points)

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Generally food is broken and absorbed within the body of organisms. In which of the following organisms is it done outside the body ?

answered Apr 25, 2023 in Science by abhinav (17.6k points)

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An element 'M' has 50% of the electrons filled in the 3rd shell as in the 2nd shell. The atomic number of 'M' is

answered Apr 25, 2023 in Science by abhinav (17.6k points)

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