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42) M is the molecular weight of KMnO4. %%EOF 22) A compound was found to contain nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. 12) Which chemical causes Minamata disease? 24 0 obj <> endobj 62) In which mode of expression, the concentration of a solution remains independent of temperature? 31) What do you mean by dating of objects? pretty much the same. (a) 2.16 g (b) 2.48 g (c) 2.32 g (d) 2.64 g Each question … UPSC IAS (Mains) Exam 2020 – Online Application Available!
(There is no change in the oxidation state of hydrogen).
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Answer: Number of moles of solute in one liter of the solution.
Answer: Same mass number but a different atomic number. 0000001095 00000 n 0000010831 00000 n (a) 22 (b) 44 (c) 66 (d) 88 Practice with important Hard Chemistry Questions and Answers for SSC Exam.
17) What do you mean by a buffer solution? After the explosion, the volume of the mixed gases remaining was 25 ml. 80) Which element is present in the least amount in a living body? Answer: 4.87 g. 79) What is the percentage of carbon in steel?
(a) NO (b) N2O3 (c) N2O5 (d) N2O4 27) What are isobars? 44) Which material is used in display devices, such as digital watches? 0000003689 00000 n 0000010701 00000 n
10) 3 g of a salt of molecular weight 30 is dissolved in 250 g of water. 11) What happens when an electron moves nearer to the nucleus of the atom? Answer: Same mass number but a …
9) The scientist who introduced the model of the atom similar to the solar system? Answer: C. 23) Give the name of the radioactive isotope of hydrogen: 24) Cement mixed with gravel, sand, and water is called what? Chemistry Quiz Questions and Answers pdf – Chemistry GK Pdf 2020 If you think this chemistry general knowledge test is useful, then don’t forget to share with your friends. [H = 1, Mg = 24, Al = 27] Answer: 4.14 g. 15) What kind of thermometer is used to determine the depression of freezing point? Acids have a pH level below 7.
5) What is the value of Planck’s constant in SI units? Login via Facebook; Login via Google; Login with email; 10 most difficult chemistry riddles. I’m glad you chose option four. Save my name, email, and website in this browser for the next time I comment.
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Welcome to the www.letsstudytogether.co online free pdf section. Answer: Atoms having an equal number of neutrons. 83) What kind of metals are generally extracted by electrolysis? What is the equivalent weight of the metal? 46) If 0.50 mole of BaCl2 is mixed with 0.20 mol of Na3 PO4, the maximum number of moles of Ba3 (PO4) 2 that can be formed is
(a) 3 (b) 4 (c) 5 (d) 6 this is the first one which worked!
table sugar has much more calories . Answer: Alkali and alkaline earth metals. (a) 8 g (b) 16 g (c) 32 g (d) 24 g (a) 0.70 (b) 0.50 (c) 0.20 (d) 0.10
0000001621 00000 n Just select your click then download button, and complete an offer to start downloading the ebook. Chemistry quiz. Answer: D. 48) Which chemical compound may soon be used as a fuel for driving vehicles? Answer: Emission of electrons by electromagnetic radiation striking on a metal surface.