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If the Boolean expression (p ⇒ q) ⇔ (q * ( ∼ q) is a tautology, then the boolean expression p * ( ∼ q) is equivalent to :

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H. Convert the following degree Celsius temperature to degree Fahrenheit. a. 40°C b. 30° C

asked Apr 21, 2021 in Chapter 1: Some Basic Concepts of Chemistry by anonymous

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d. An object thrown vertically upwards reaches a height of 500 m. What was its initial velocity?

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b. 1 H, 7 N, 20Ca, 16S, 4 Be, 18Ar Which of these elements belong to the second group?

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R. Calculate the mass of sulfur dioxide produced by burning 16 g of sulfur in excess of oxygen in contact process.

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Two numbers are chosen from 1, 3, 5, 7,… 147, 149 and 151 and multiplied together in all possible ways.

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Why two or more mercury drops form a single drop when brought in contact with each other?

asked Jun 27, 2021 in Chapter2:Mechanical Properties of Fluids by Doubtly (98.9k points)

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write notes on: (c) The coasts of Brazil

asked Jun 21, 2021 in Chapter 3: Physiography and Drainage by Doubtly (98.9k points)

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Refractive index of water with respect to air is 1.33 and that of diamond is 2.42.

asked Apr 5, 2021 in Science Part 1 by Doubtly (98.9k points)

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What is the basis of the Bernoulli's principle?

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Base of a triangle is 9 and height is 5 . base of another triangle

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C) A wide variety of insect species is found in Brazil.

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Explain The need of the term average atomic mass

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If P4O10 + HNO3 are mixed in 1:4 ratio , then nature of nitrogen oxide obtained will be

asked Jul 20, 2021 in 2021 by Doubtly (98.9k points)

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tangent and normal are drawn to y^2=2x at A(2,2). tangent cuts x-axix at T and normal cuts parabola again at P

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(f) India receives precipitation from the North-East Monsoon winds too.

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(b) There are dissimilarities between the eastern and western coasts of India.

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One of the byproduct formed during the recovery of NH3 from solvay process :-

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How many grams does an atom of hydrogen weigh ?

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e. Explain the similarity and difference in two events, namely adding NaOH to water and adding CaO to water.

asked May 11, 2021 in Chapter 3: Chemical reactions and equations by Doubtly (98.9k points)

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