Below are the MCQs of Chemistry which were in NET-1. 1) Select the one that is paramagnetic? a) Bismuth b) Chromium c) Water d) Mercury 2) Ph of pepsin? 3) Which of the following has maximum specific heat? a) Copper b) Aluminium c) Iron d) Ice 4) Hydrolysis of acetals gives a) Carboxylic acid b) Ketone c) Aldehydes d) Ethers 5) Molecule in which the distance between the two adjective carbon atoms is largest is a) Ethane b) Ethene c) Ethyne d) Benzene 6) The temperature at which a gas liquefies under 1 atm of pressure is called a) Critical temperature b) Boiling point c) Normal boiling point d) Triple point 7) The law which describes the relationship between the volume and temperature of a gas at constant pressure is called a) Boyle's law b) Avogadro's law c) Charle's law d) Graham's law 8) Percentage of nitrogen in ammonia? 9) Slow cooling causes crystals of ��..length? 10) What will we get as the last product of fractional distillation of petroleum a) Gasoline b) Petrol c) Diesel d) Kerosene oil 11) What is the nature of surfactant whose deficiency causes a syndrome? 12) Which of the following will be separated by filtration? a) Salt and water b) Sugar and water c) Alcohol and water 13) What is the formula to calculate a molecular weight of solute using freezing constant? 14) Slow cooling result in ��..crystals?? 15) Highest ionization potential? a) Na b) Ca 16) Commercial source of noble gas is? 17) Energy in one ton coal. 18) What is the color of epsum salt? a) Reddish b) Bluish c) Greenish d) Colorless 19) Metallic character ��downs the group in 5A. 20) Which of the following causes suffocation? a) S02 b) C02 c) Fog 21) Solid waste incineration produces carcinogen a) HOX b) Dioxin 22) Why does electronegativity decreases down the group? 23) % composition of ammonia in ammonium nitrate? a) 47% b) 32% c) 87% 24) Carbon does not form which of the following bonds? a) C=c b) c=o c) C triple bond S d) C triple bond N 25) Conversion of solid waste into oil and gas is not associated with which process? a) Pyrolysis b) Hydrolysis c) Hydrogenation d) Bicamation 26) Indoform test is used to distinguish ketones from ��..? 27) Which catalyst is used in oxidization of benzene? 28) What is produced in thermal decomposition of lead oxide? 29) What is used in orange products as artificial sweetener? 30) PVC contains which halogen? 31) Which of the following is wood sprit a) Ethanol b) Ethanal c) Methnal d) Methnol 32) Who invented company name Celera? 33) Reaction by which potassium magnate is produced? 34) Who explained earth by catastrophism? 35) By which process solid wastes are not degraded? 36) Use of asbestos in gooch crucible? 37) What is used in cement manufacture? a) Limestone b) Starch 38) Ph of catalase? 39) Alcohol, phenol and ethers are derivatives of? |
Inverse of a Function In this Post I will discuss the method for finding the inverse of a given function from the 4 options as given in the Entrance tests of Engineering Universities. The very first step before finding the inverse is to make a check whether the function is One-to-One or not. By One-to-One function we mean that function for example f(x) should not have the same value at two different values of x. In other words for each element of the Domain there should be a distinct element in the range. Check for One-to-One: A function which passes the horizontal line test is a One-to-One function. This means if a horizontal line is drawn it should not cross the function curve at more than one point. Another way to check if a function is One-to-One or not is shown below: If , f(a) = f(b) , implies that a=b , the given function is One-to-One. Consider the following examples: f(x) = 5x + 10 f(a) = 5a + 10 f(b) = 5b + 10 Taking f(a) = f(b) gives, 5a...
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