Master cadre chemistry 2020

Syllabus of chemistry for master cadre  Inorganic chemistry (1) chemical periodicity Modren periodic law And present form of the periodic tables, s, p, d and f block elements, periodic trends in properties of elements Atomic and ionic radii, ionisation enthalpy, electron gain enthalpy, valance, oxidation states and chemical reactivity. (2)general principles and process of isolation of metals Modes of occerence of elements in nature, minrals, ores, steps involved in extraction of metals - concentration, reduction( chemical and electrolytic methods) and refining with special reference to extraction of Al , Cu , Zn and iron ; thermodynamic and electrochemical principles involved in extraction of metals. (3) hydrogen Position of hydrogen in periodic table, isotopes, prepration, properties and uses of hydrogen, physical and chemical properties of  water and heavy water, structure , prepration, reaction amd uses of hydrogen peroxide, hydrogen as a fuel.  (4) s block elements Gr...

Thermodynamics Thermodynamics is branch of physics which deals with study of heat and temperature and transformation are interconversion of heat energy. Thermal equilibrium #if a gas enclosed in a vessel which is is completely insulated from its surroundings with fixed P,V,T,m do not change with time is in state of of equilibrium. #in thermal equilibrium temperature of the the two systems are equal Zeroth law of thermodynamics #if objects A and B separately in thermal equilibrium with third object C then objects A and B are in in thermal equilibrium with each other. First law of thermodynamics ∆Q=∆U+∆W It implies that when we supply some heat energy to the system it may do one or both the following things. (1).it may increase the internal energy of the system if it remains in the system and (2.)it may do some external work if it leaves the system is known as first law of thermodynamics. #when heat is supplied to the system ∆Q is positive but when heat is drawn from the system ∆Q is neg...

some basic concepts of chemistry Q1. What will be the molarity of of a solution which contains 5.85 g of NaCl(s) per 500 mL (a) 4mol per litre (b) 20 mol per litre (c) 0.2 mol per litre (d) 2 mol per litre Q2. The compound contain 8% of sulphur the minimum molecular weight of the compound is (a)100 (b)200 (c)350 (d)400 Q3.which of the following methods of expressing concentration varies with temperature (a) molality (b) weight percent (c) normality (d) molarity Q4. Which of the following concentration terms is/are independent of temperature? (a) molality only (b) molality and mole fraction (c) molarity and mole fraction (d) molality and normality Q5. 80 gram of oxygen contains as many atoms as in (a) 10 gram of hydrogen (b) 5 g of hydrogen (c) 80 gram of hydrogen (d) man gram of hydrogen Answers 1(c) 2.(d) 3.(c),(d) 4.(b) 5.(b)

Q1. Which of the following parameters does not characterize the thermodynamic state of matter (a) temperature (b) pressure (c) work (d) volume Q2."heat cannot itself flow from a body at lower temperature to body at higher temperature"is a statement or consequence of (a) second law of thermodynamics (b) conservation of momentum (c) conservation of mass (d) first law of thermodynamics Q3. Even carnot engine cannot give 100% efficiency because we cannot (a) prevent radiations (b) find ideal sources (c) reach absolute zero temperature (d) eliminate friction Q4. If the temperature of a source is increased the efficiency of carnot engine (a) increase (b) decrease (c) remains constant (d) first increased and remains constant Q5. The internal energy of an ideal gas is function of its absolute temperature only this statement refers to (a) avogadro law (b) Maxwell law (c) joules law (d) regnault's law Answers 1.(c) 2.(a) 3.(c) 4.(d) 5.(c)

Daily Quiz Q1. Which of the following pears have same number of atoms (a) 16 gram of O2(g) and 4 gram of H2 (b) 16 gram of O2 and 44 gram of CO2 (c) 28 gram of N2 and 32 gram of O2 (d) 12 gram of C(s) and and 23g of Na(s) Q2. One mole of calcium phosphide on reaction with excess of water gives (a) 1 mol of phosphine (b) two moles of phosphoric acid (c) 2 moles of phosphine (d) one mole of phosphorus pentoxide Q3. Hydrocarbon is composed of 75% carbon the empirical formula of the compound is (a)CH2 (b)CH3 (c)CH4 (d) C2H7 Q4. What is molality of pure water (a)1 (b)18 (c)55.5 (d) none of these Q5. Molarity of 98% of H2 SO4 (d=1.8g/mL) bhai wait is (a)6M (b)18M (c)10M (d)4M

Q1. The amount of of substance deposited bye the passage of 1 ampere of current for one second is equal to (a) equivalent mass (b) molecular mass (c) electrochemical equivalent Q2.In which cell the free energy of chemical reaction is directly converted into electricity (a) leclanche cell (b) concentration cell (c)fuel cell. (d) lead storage battery Q3. Which of the following statements are correct regarding dry cell? (a) zinc container acts as anode (b)sync container in touch with a paste of MnO2 and carbon (c) dry cell can easily be charged (d) graphite rod acts as cathode Q4. Which of the following metals can displace H2 from an acid (a)iron (b) nickel (c) copper (d) silver Q5. Galvanized iron sheets are  coated with  (a)C (b)Cu (c)Zn (d)Ni