Maths test for exam preparation

(i) Write the equation for the laboratory preparation of hydrogen. (ii) How is the gas collected? (iii) Write the confirmatory test for Hydrogen.

Professors Lambert and Stassen teamteach an advanced psychology class. Their students recently took their final exams, and the professors are preparing to grade them. Professor Stassen predicts that, if she graded all the exams, she would take 50% more time than Professor Lambert would if he graded all the exams. They estimate that it will take them 40 hours to grade all the exams if they grade together. Which of the following equations best represents the situation described?

What is Lassaigne's solution and how is it prepared ? Discuss the chemistry of the tests used for the detection of following elements using this solution. N

What is Lassaigne's solution and how is it prepared ? Discuss the chemistry of the tests used for the detection of following elements using this solution. Cl

What is Lassaigne's solution and how is it prepared ? Discuss the chemistry of the tests used for the detection of following elements using this solution. Br

What is Lassaigne's solution and how is it prepared ? Discuss the chemistry of the tests used for the detection of following elements using this solution. (A) Sulphur

Which of the following relations are functions ? y is the Maths teacher of x where x represents any pupll taking up Maths in a school.

{:("Column A" , "12 students from section A and 15 students from section B failed an Anthropolgy exam. Thus, an equal percentage of attendees failed the exam from either section","ColumnB"),("Number of attendees for the exam from section A",,"Number of attendees for the exam from section B"):}

During sodium extract preparation for Lassaigne's test both N and S present in organic compound change to