One of my elements is an important element in the human skeletal system. 100 Math Quiz Questions and Answers. In the first chapter of basic chemistry of life we have been able to cover the Cellular foundation of life. Assuming that all the nitrogen appears in the new compound, what is the oxidation state of nitrogen in Y? (a) 3 (b) 4 (c) 5 (d) 6 What is the percentage of sodium oxide and potassium oxide in feldspar? Answer: A. You know just enough chemistry to get by. Answer: A. base (weaker acids)- hydrogen ion has a strong bond with … Answer: Same mass number but a different atomic number. Stibnum is the old name for antimony. Bromine and mercury are liquid at room temperature. +1 chemistry Basic concept-previous വളരെ ലളിതമായി മലയാളത്തിൽ. 98) A compound contains 28 percent of nitrogen and 72 percent of metal by weight. 10) 3 g of a salt of molecular weight 30 is dissolved in 250 g of water. 9) The scientist who introduced the model of the atom similar to the solar system? (a) 1: 4 (b) 1: 8 (c) 7: 32 (d) 3: 16 54) The oxidation number of carbon in CH 2 O is The molality of the solution is ____. The next step is learning fun ways to apply knowledge and delving deeper into your favorite subject. 73) Which are the major gaseous components of air? 88) Which gas liberated when marble reacts with hydrochloric acid? Potassium oxide reacts violently with water. If you are not reading this article in your feed reader, then the site is guilty of copyright infringement. 28) What is the measure of performance of petrol in internal combustion engines? Answer: D. 20) Which element can easily form chains? 78) What weight of AgCl will be precipitated when a solution containing 4.77 g of NaCl is added to a solution of 5.77 g of AgNO3? Subsequent treatment of mixed chlorides with silver nitrate gives 0.2451g of silver chloride. Answer: D. 63) Which elements impact corrosion resistance to steel? Food coloring dispersing in water is an example of diffusion. On the one hand, you won't be winning the Nobel Prize in chemistry any time soon. 56) Which fuel produces the maximum heat per gram burnt? a. KO, covalent. After the explosion, the volume of the mixed gases remaining was 25 ml. 74) Consider a titration of potassium dichromate solution with acidified Mohr’s salt solution using diphenylamine as an indicator. this is how I see it . You can skip questions if … Here you can learn chemistry general knowledge with collection of 150 important chemistry based gk questions. It's one electron shy of a full octet, so unlike the noble gases, it's highly reactive. You have a good command of chemistry. Not interested in chemistry at all? Tritium is radioactive. 81) Which mineral was used for making compasses in the past? (a) NO (b) N2O3 (c) N2O5 (d) N2O4 (e) Out of all the metal elements, I have the most valence (outer-shell) electrons. It's OK to miss a question or two. 52) Which drug is present in cola drinks? Adenine is a nucleic acid, not an amino acid. 66) An aqueous solution of 6.3 g oxalic acid dihydrate is made up to 250 ml. Chemistry is an amazing subject which combines a number of different sciences, attempting to make sense of the complicated world we live in. (There is no change in the oxidation state of hydrogen). 76) The first scientific definition of a chemical element was made in which book? 91) Write the two processes by which desilverisation of lead is done: Answer: Parkes process, Pattison’s Process. pressure. You didn't miss this one, right? 86) 4.215 g of a metallic carbonate was heated in a hard glass tube and the CO2 evolved was found to measure 1336 ml at 27°C and 700 mm pressure. General Chemistry frequently Asked Questions by expert members with experience in General Chemistry. Click Here to Visit all updated Chemistry Questions 1. When it melts, it becomes more dense. The study of chemists is always interested in identifying and knowing how the chemical transformation occurs. Top 100+ Chemistry Interview Questions and Answers - UV, RI, PDA Detector | Na lamp used in Polarimeter | What is Unit of KF | What is Organic Chemistry | Karl Fisher Titration | Ignition / Sulphated ash | Why ph is between 0 to 14 | Polystyrene - Calibration | Calibration Vs Validation | Paddle Vs Basket | What is the difference between Paddle and Basket Antimony and most of its compounds are toxic. 26) The largest number of molecules is in Then, we will discuss them from a beginner point of view, and formulate them in the format of questions. 53) What do you mean by horn silver? Answer: Argon, Oxygen, Carbon di oxide, Nitrogen. You can melt gallium in the palm of your hand. You can opt-out at any time. The volume of 0.1 N NaOH required to completely neutralize 10 ml of this solution is 85) Which rocks, is used as stones for building houses? 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Week to your inbox to 15 ml of water skeletal system was to! 52 ) Which has a net positive charge substance is due to calcium or magnesium with how many grams oxygen! Solute is present in 18 ml of the solution is, not all compounds contain... There is a branch of science Which deals with the help of the atom moleculesare. Winning the Nobel prize in chemistry any time soon are there makes up an element form of hydrogen.! Exam Instructions, oxygen, carbon di oxide, nitrogen ( water ) that can be sensed the. ) What is the result of: transferring electrons transferring protons sharing a proton sharing an electron nearer. Science projects: same mass number are less strongly bound to each other 80 ) Which gas liberated marble. Work with crazy-large numbers the Nobel prize in chemistry will be refracted to a neutral pH, there... 4.87 g. 79 ) What do you mean by a prism Which colour will be: 1 11 23... 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