to show that the solution of ammonia in water contains hydroxide ions. [i.e.properties of base] (iii) Name a simple method you would employ to prepare ammonium salts in your laboratory. Q. 6. State what you observe when a piece of moist red litmus paper is placed in a gas jar of ammonia. Q. 7. Ammonium salts decomposes on heating. What other property do ammonium salts have in common ? Q. 8. The following reactions are carried out : A: Nitrogen + metal → compound X B: X + water → ammonia + another
Premium Ammonia Nitrogen Sulfuric acid
CBSE Sample Question Paper (Solved) [Released by CBSE‚ New Delhi in July 2010 for First Term (SA-I) to be held during the academic year 2010-11 and onward] Time : 3 to 3 1 hours 2 M.M. : 80 General Instructions (i) All questions are compulsory. (ii) The question paper consists of 34 questions divided into four sections A‚ B‚ C and D. Section A comprises of 10 questions of 1 mark each‚ Section B comprises of 8 questions of 2 marks each‚ Section C comprises of 10 questions of 3 marks each and
Premium Harshad number Integer Natural number
Grade 10 Academic Mathematics Ontario Canada Curriculum MathWiz Practice Exam 1 Instructions: Provide solutions where needed with a final statement Pay attention to degree of accuracy required Check your work when finished Part A 1. 2. 3. Place your answers only in the space provided. Answers Determine the slope of the line 3 x 2 y 8 0 . Determine the equation of the vertical line passing through A (5‚ 11). Determine the distance between the points X (-1‚ 5) and Y (4‚ 17)
Premium Quadratic equation Elementary algebra
FORM TP 2011092 TEST CODE OI234O2O MAY/JUNE 2011 CARIBBEAN EXAMINATIONS COUNCIL SECONDARY EDUCATION CERTIFICATE EXAMINATION MATHEMATICS Paper 02 - General Proficiency 2 hours 40 minutes 18 MAY 2011 (a.m.) INSTRUCTIONS TO CANDIDATES 1. This paper consists of TWO sections. 2. There are EIGHT questions in Section I and THREE questions in Section II. 3. Answer ALL questions in Section I‚ and any TWO questions from Section II. 4. Write your answers
Premium
NATIONAL SENIOR CERTIFICATE GRADE 10 MATHEMATICS P1 EXEMPLAR 2012 MEMORANDUM MARKS: 100 This memorandum consists of 7 pages. Copyright reserved Please turn over Mathematics/P1 2 NSC – Grade 10 – Memorandum DBE/2012 QUESTION 1 1.1.1 (m − 2n )(m 2 − 6mn − n 2 ) = m 3 − 6m 2 n − mn 2 − 2m 2 n + 12mn 2 + 2n 3 3 2 2 = m − 8m n + 11mn + 2n 3 expansion m3 ; + 2n3 − 8m 2 n + 11mn 2 (3) 1.1.2 3 x +1 x2 − x +1 = − 2 4 x −
Premium Question
GPS AND TRIANGULATION GPS calculation works on the principle of the receiver (example the handheld GPS receiver on car or mobile) calculating the distance of that receiver from a set of known points. 1) The receiver needs to receive a straight line signal (also called line of sight) from the known point without reflection. The best things that can do that are satellites overhead. 2) To enable that‚ the US department of defence has setup 24 low earth orbit (LEO) satellites. They are called the
Premium Global Positioning System Satellite Navigation
Neighbors are people who live around us. Often people don’t get to choose who their neighbors are. There are so many different types of neighbors out there. There are some neighbors with good qualities and some neighbors with terrible ones. Three qualities that make a good neighbor are if they are‚ friendly mature and if they are social or not. Hopefully your neighbors have good qualities because you may not get to choose them. The most important quality to a good neighbor is if they are friendly
Premium English-language films Viggo Mortensen Quality
the Union Public Service Commission for recruitment into the Indian Military Academy‚ Officers Training Academy‚ Indian Naval Academy and Indian Air Force Academy. The Notification for the examination is usually released in the months of October and June‚ and the examinations are conducted in February and November respectively. Only unmarried graduates are eligible to sit for the exam. Successful candidates are admitted into the respective Academies after an interview conducted by the Services Selection
Premium India
Centre No. Candidate No. Paper Reference(s) Surname Paper Reference Initial(s) 7 0 4 0 7040/01 0 1 Signature Examiner’s use only London Examinations GCE Biology Ordinary Level Paper 1 Monday 10 May 2010 – Morning Time: 1 hour 30 minutes Team Leader’s use only Question Leave Number Blank 1 2 3 4 5 Materials required for examination Nil Items included with question papers Nil 6 7 8 9 Instructions to Candidates In the boxes above‚ write your centre number
Premium Red blood cell Malaria Liver
Republic of the Philippines Department of Education DepEd Complex‚ Meralco Avenue Pasig City K to 12 Curriculum Guide MATHEMATICS (Grade 1 to Grade 10) December 2013 K to 12 BASIC EDUCATION CURRICULUM Figure 1.The Conceptual Framework of Mathematics Education K to 12 Mathematics Curriculum Guide December 2013 Page 2 of 109 K to 12 BASIC EDUCATION CURRICULUM CONCEPTUAL FRAMEWORK Mathematics is one subject that pervades life at any age and in any circumstance. Thus‚ its value goes beyond
Premium Educational years Real number Mathematics