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By Pravin Keshari

About blog


        The main purpose of making this blog is to provide free learning materials to the Nepalese students. All the study materials posted here are free of cost. The notes and study materials are as per the syllabus of different level of different boards of Nepal.

All the stuffs posted here are for non-profit purpose. 

Thanks !!!
Pravin Keshari
    B.Sc. Chemistry (T.U.)
    +977-98154-97631
    pravin.keshari.31@gmail.com




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Set of 50 MCQ's for CTEVT & Bridge Course || Part-02 ||

By Pravin Keshari
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Set of 50 MCQ's for CTEVT & Bridge Course Part-02 In this section you will find 50+ questions for practice. These questions are helpful for  CTEVT  as well as  Bridge course  entrance preparation of Science stream.  Everyday a blog post will be posted with 50+ questions upto 10 days. These questions are available free of cost to all students.  The 50 questions are classified as:     1) English - 10 questions         2) Chemistry - 10 questions     3) Physics - 10 questions     4) Biology - 10 questions     5) Maths - 10 questions Solve the MCQ's by yourself and check your aptitude. If you get stuck at any question, comment the question number(with your full name and phone number) below in the comment section. We will try to reply each and every comments. 50 MCQ for CTEVT & Bridge Course English 1) He is...........European singer.     a. a     b. an     c. ...
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Chromosome and Sex determination || Solved Q/A to practice for S.E.E. - Exam || Part-1

By Pravin Keshari
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Chromosome and Sex determination Part-1  Very short questions and answers for S.E.E. students Questions and answers to practice for S.E.E. examination 1) What are genes? Answer: Genes are tiny units of heredity found in chromosomes. 2) What are genes made of? Answer: Genes are made of DNA (Deoxy-Ribo Nucleic Acid) . 3) What types of cells contain diploid chromosomes? Answer: Somatic cells or body cells contain diploid chromosomes. 4) What is kinetochore? Answer: The centromere of a chromosome is called kinetochore. 5) Write down the major function of genes. Answer: The major function of genes is to transmit hereditary characteristics from one generation to another. 6) What is a sex-linked disease? Answer: The disease which occurs only in a particular sex (either male or female) is called a sex linked disease. 7) What is sex chromosome? Answer: The chromosome that determine the sex of an organism is called sex chromosome. 8) Write any two examples of chromosomal disorder...
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Human Nervous and Glandular system || Solved Q/A to practice for S.E.E. - Exam || Part-1

By Pravin Keshari
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Human Nervous and Glandular System Part-1  Very short questions and answers for S.E.E. students Questions and answers to practice for S.E.E. examination 1) What are nerves? Answer: Nerves are the communication lines for transmission of impulses from one part of body to another. Nerves are elongated, slender, thread like structures arising from the brain and spinal cord. 2) What is a neuron (or a nerve cell)? Answer: Neuron (nerve cell) is a highly specialized cell  which acts as the structural and functional unit of nervous system. 3) Name the three membranes that surround the brain and spinal cord. Answer: The three membranes that surround the brain and spinal cord are duramater, piamater and archanoid mater. 4) What is cerebrospinal fluid? Answer: Cerebrospinal fluid is the fluid present between the layers of meninges. 5) Where is cerebrospinal fluid found? Answer: Cerebrospinal fluid is found between piamater and archanoid matter. 6) Write down the surface area of the cereb...
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Artificial Vegetative Propagation || Solved Q/A for S.E.E. - Exam || Part-2

By Pravin Keshari
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Asexual & Sexual Reproduction Artificial Vegetative Propagation Part-2  Very short questions and answers for S.E.E. students Questions and answers to practice for S.E.E. examination 1) What is multiple fission? Answer:  Multiple fission is the method if asexual reproduction in which a parent organism splits into more than two daughter organisms at the same time. 2) What is vegetative propagation? Answer:  Vegetative propagation is the method of asexual reproduction in which new plants are produced by cutting, sowing or grafting of the vegetative parts of plants like root, stem or leaves. 3) Name the plant that reproduce through root. Answer:  Dahlia is a plant that reproduce through root. 4) Write the name of each of the plant propagated through root, and leaf. Answer:  Root → Sweet Potato                 Leaf → Bryophyllum 5) What is sexual reproduction? Answer:  The complex process in which reprod...
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Basics of Chemistry || Part-03 ||

By Pravin Keshari
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Basics of Chemistry Part-03   (Shell and Sub-shell Electronic configuration ) In the previous two parts of this series, we have learnt about details of first 20 elements, calculated their atomic weight and drawn their atomic structures.  Not seen Part-1 and Part-2 yet?? Click here for Basics of Chemistry || Part-01 || Click here for Basics of Chemistry || Part-02 || In this part we will be discussing about shell(orbit) and sub-shell(orbital) electronic configuration of first 20 elements. We will learn how to write these electronic configurations and what information can be obtained from them. So, let us start... As we have seen in the atomic structure, the first shell (orbit) can accommodate maximum 2 electrons, we will first try to put 2 electrons in 1st orbit i.e., K-Shell (orbit). But, Hydrogen contains only 1 electron as a whole, so it contains only 1 electron in the 1st shell (Orbit). Then, the 2nd orbit i.e., L-Shell can accommodate maximum 8 electrons. So, we will ...
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Classification of Elements || Solved Q/A for S.E.E.-Exam || Part-2

By Pravin Keshari
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Classification of Elements Part-2  Very short questions and answers for S.E.E. students Questions and answers to practice for S.E.E. examination 1) Write the electronic configuration of  potassium in terms of sub-shell. Answer: The electronic configuration of potassium in terms of sub-shell is K-1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹. 2) In what groups do magnesium and nitrogen belong in modern periodic table? Answer: In modern periodic table, magnesium belongs to group IIA (2) and nitrogen belongs to group VA (15). 3) What is common name given to the group I elements in the modern periodic table? Answer: The group I of modern periodic table is commonly named as 'alkali metals' as they contain elements which form alkali on reacting with water. 4) In which group of modern periodic table are alkaline earth metals and halogens kept? Answer: In modern periodic table, alkaline earth metals are kept in group 2 and halogens are kept in group 17. 5) In what groups, noble gases, most reactive non...
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Basics of Chemistry || Part-04 ||

By Pravin Keshari
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Basics of Chemistry Part-04   (Valancy, charge & ions ) In the previous three parts of this series, we have learnt about details of first 20 elements, calculated their atomic weight, drawn their atomic structures and learnt about shell & sub-shell electronic configurations. Not seen Part-1, Part-2 & Part-3 yet?? Click here for Basics of Chemistry || Part-01 || Click here for Basics of Chemistry || Part-02 ||   Click here for Basics of Chemistry || Part-03 || In this part we will be discussing about valencies and radicals of the first 20 elements about which we have studied in previous parts. We will first learn to calculate valencies from shell and sub-shell electronic configurations and then we will be looking towards ions. So, let us start without any delay... After understanding shell electronic configuration, it is easy to predict valencies of the elements just by looking their last number. For example, the Electronic configuration (E.C.) of Lithium i...
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SEE - 2078 Evaluation Schedules in Excel Format (For school use)

By Pravin Keshari
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SEE - 2078 Evaluation Schedules in Excel Format (For school use)  National Examination Board , Sanothimi, Bhaktapur has published a notice regarding the evaluation methodology of the SEE - 2078 Batch. As we all know that, this year (2078 B.S.) the examination of SEE was cancelled and NEB decided to collect marks as per internal evaluation of students. Recently NEB published an evaluation methodology on its website. Many of us have read that document and need to work on that. Here, I am providing you all the three schedules that has been mentioned in that methodology.  Schedule - 1(A) - Formative assessment This schedule is to be fulfilled by related subject teachers as per their own evaluation about the students in class attendance, their class work and homework, social activities, interaction, cleanliness, etc. This schedule must contain signature of the class teacher. Schedule -1(B) - Summative assessment This schedule is also to be fulfilled by related subject teacher as pe...
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Set of 50 MCQ's for CTEVT & Bridge Course || Part-06 ||

By Pravin Keshari
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Set of 50 MCQ's for CTEVT & Bridge Course Part-06 "It always seems impossible until it's done" In this section you will find 50+ questions for practice. These questions are helpful for  CTEVT  as well as  Bridge course  entrance preparation of Science stream.  Everyday a blog post will be posted with 50+ questions upto 10 days. These questions are available free of cost to all students.  The 50 questions are classified as:     1) English - 10 questions         2) Chemistry - 10 questions     3) Physics - 10 questions     4) Biology - 10 questions     5) Maths - 10 questions Solve the MCQ's by yourself and check your aptitude. If you get stuck at any question, comment the question number(with your full name and phone number) below in the comment section. We will try to reply each and every comments. 50 MCQ for CTEVT & Bridge Course English 1) She is ...... Hindu girl.     a) a...
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Basics of Chemistry || Part-01 ||

By Pravin Keshari
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 Basics of Chemistry Part-01   ( First 20 elements) Before understanding Chemistry, you must understand and learn about first 20 elements of the modern periodic table. Learning first 20 elements gives you basic idea about chemistry and then you will be able to do more. Click here for High Quality Picture of Modern Periodic Table Let us start with first 20 elements. List of first 20 elements Atomic number Elements Symbol No. of electrons No. of protons No. of neutrons             1 Hydrogen H 1 1 0 2 Helium He 2 2 2 3 Lithium Li 3 3 4 4 Beryllium Be 4 4 5 5 Boron B 5 ...
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