CBSE Board Students Helpline

Q.1. I am studying from NCERT books and I have completed latest CBSE Sample Papers. Will I be able to score good marks ( say 80% or more ) ? Ans. Marks scored by any student depend upon their preparation and performance during examination. The students are adviced to remain focussed and do their best. Q.2. How many sets are there for a particular question paper ? Can questions in one sets may be easier than the other set ? Ans. There are three sets of question papers. The questions in all the three sets are designed in such a manner that the level of difficulty is same in all question papers. Q.3. Will the pattern of examination be different this year for Class X and XII ? Ans. CBSE issues Sample Question Papers each year. These sample papers are designed to give a general overview of that years paper design and weightages.CBSE also issues marking schemes for the question paper. It is recommended to solve the sample papers issued by CBSE and have the marking scheme. Q.4.Is there step m...

Central Board of Secondary Education (CBSE), New Delhi has recently issued a teachers' manual on CCE for class 9 and class 10. From the current session 2009-2010, this new scheme of (CCE) continuous and comprehensive evaluation is being implemented in class 9th and the same will be implemented in class 10th too from next session i.e. 2010-2011. CCE is a continuous and comprehensive evaluation that aimed at evaluating performance on the basis of end term examinations and on academics, co-curricular sports etc on a regular basis. In this new grading system, CBSE board will not conduct board exams for class 10 and the school authorities will be issued a certificate of school as per the guidelines given by CBSE board. The proposed Certificate of School Based Assessment will be divided into three parts. 1. Part 1 will consist of Scholastic areas The academic performance of the learner in the classes 9th and 10th will reflect in the form of grades and percentile rank. During a year, two ...

Dye click here to download A dye can generally be described as a coloured substance that has an affinity to the substrate to which it is being applied. The dye is generally applied in an aqueous solution , and may require a mordant to improve the fastness of the dye on the fibre. Both dyes and pigments appear to be coloured because they absorb some wavelengths of light preferentially. In contrast with a dye, a pigment generally is insoluble, and has no affinity for the substrate. Some dyes can be precipitated with an inert salt to produce a lake pigment , and based on the salt used they could be aluminium lake, calcium lake or barium lake pigments. Synthetic dyes quickly replaced the traditional natural dyes. They cost less, they offered a vast range of new colours, and they imparted better properties upon the dyed materials. Dyes are now classified according to how they are used in the dyeing process. Dyes are generally defined along the lines of being coloured, arom...