Why does the procedure call for a sample containing no more than 60 mg of Mg^{2+}?

Why is the solution acidified with HCl before adding the precipitant?

Why is the acid–base indicator methyl red added to the solution?

Explain why forming Mg(PO_{3})_{2} instead of Mg_{2}P_{2}O_{7} increases the precipitate’s mass.

What additional steps, beyond those discussed in questions 2 and 3, help improve the precipitate’s purity?

Why is the precipitate rinsed with a solution of 5% v/v NH_{3}?

Which of the following is not a type of Spectroscopy? a) Gamma ray b) X ray c) Nuclear magnetic resonance d) Sound

Teaching is defined as An informative process An informal process An initiative process An interactive process

Basic teaching model was developed by Robert Glaser Robert Gagne E. Thorndike B.F. Skinner

The number of components in the basic teaching model is Three Four Five Six

The ‘3M’ concept in instructional procedures refers to Methods, Message and Materials Methods, Materials and Media Methods, Media and Message Methods, Materials and Marking

The most important activity of the teacher is Questioning activity Explaining activity Demonstration activity Assignment activity

Teaching is Classroom centered Teacher centered Student centered Lab centered

Pedagogy is A child-focused teaching approach An adult-focused teaching approach A trainer-focused teaching approach An instructor-focused teaching approach

3M (MMM) does not include Methods Materials Media Message

The person associated with theory of Behaviorism is John B. Watson John Piaget George Siemens Stephen Downes

The person associated with theory of Cognitivism is John B. Watson John Piaget George Siemens Gagne

The person associated with theory of Constructivism is John B. Watson John Piaget George Siemens Gagne

All Questions

Physics

Chemistry

Mathematics

English

Organic Chemistry

Inorganic Chemistry

Physical Chemistry

Algebra

Geometry

Evaluate :

∫2xcos(x2 – 5).dx

If the sum of 14 terms of an A. P is 1050 its first term is 10 find 20th term ?

Diagonals of a quadrilateral 30 cm long and the perpendicular drawn from the opposite vertices are 5.6 and 7.4 cm find the area of the quadrilateral.with steps ?

Find the sum of the integers between 10 and 30 including 10 and 30 which are not divisible by 3.

A cyclic quadrilateral pqrs are where PS equals to PQ and angle SPQ is 70 degree find angle psq