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  Entrance Exam Psychometric Assessment Exam Performance Psychometric Test For Students Preparing for Competitive Entrance Exams Part 1: Reaction to Pressure 1. When you encounter a difficult question in a mock test that you cannot solve immediately, what is your immediate reaction? I panic and feel like I have forgotten everything else. I get nervous and spend too much time trying to solve it. I feel annoyed but mark it to review later. I calmly skip it immediately and move to the next question to save time. 2. How does the thought of the upcoming exam date affect your sleep or appetite? Severely; I often have insomnia or lose my appetite completely. Moderately; I sometimes struggle to sleep the night before a mock test. Mildly; I feel butterflies but my routine ...

LAWS OF CHEMICAL COMBINATION

(a) Law of conservation of mass: "In all physical and chemical changes, the total mass of the reactants is equal to that of the products" or "matter can neither be created nor destroyed."

(b)Law of constant composition/definite proportion: "A chemical compound is always found to be made up of the same elements combined together in the same fixed ratio by weight".

(c) Law of multiple proportions: "When two elements combine together to form two or more chemical compounds, then the weight of one of the elements which combine with a fixed weight of the other bear a simple ratio to one another".

(d) Law of reciprocal proportions: The ratio of the weights of two elements A and B which combine with a fixed weight of the third element C is either the same or a simple multiple of the ratio of the weights of A and B which directly combine with each other. 

(e) Gay-Lussac's law of gaseous volumes: "When gases react together, they always do so in volumes which bear a simple ratio to one another and to the volumes of the products, if gaseous, all measurements are made under the same conditions of temperature and pressure".

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