Class 9 - Maths - History of Indian Mathematics - MCQs

Aryabhatta - statute at
University of Astrophysics at Pune
image credits: wikipedia

History of Indian Mathematics - MCQs

(Questions taken from MP Board Question bank for class 9.)
(Answers are provided at the end)

Q1: Main branch of Mathematics is :
(a) Arithmetic
(b) Algebra
(c) Geometry
(d) Accountancy

Q2: Which is the base of scientific development?
(a) Physics
(b) Chemistry
(c) Mathematics
(d) None of these

One Word Substitution (English Grammar)

One Word Substitution

In competitive examinations (BITSAT, NDA, University Graduate entrance...), often there are questions on 'one word substitution'. Here is a list to help you.

One word substitution is also important to write or speak something very precisely. Class 10 grammar has a topic 'Avoid repetition' covering about it.

1. Anarchist: One who promotes revolt against government.
2. Convalescent: One who is recovering from illness.
3. Omnipotent: One who is all powerful.
4. Omnipresent: One who is present everywhere.

CBSE Class 11 - Physics - CH2 - Error Analysis #PhysicsNotes #eduvictors

Error Analysis

Q1: Define error.

Answer: The exact measurement of a physical quaintly is not possible. This is known as Heisenberg's uncertainly principle. Uncertainty in the measurements is called error.

Numerically, the deviation of the measured value from the actual value is called an error.  If X is the quantity measured, then ΔX is called error in X. i.e. Error = Actual value - Measured value.

English Reading Comprehension (Set-2)

Reading Comprehension

Q1 (CBSE 2011 Class 9 Exam): Read the passage carefully.

It is about nine in the morning and a scraggly bunch of kids is waiting near an abandoned building in Lodhi Colony for their school to arrive. The school is a bright yellow bus kitted out with cabinets, a blackboard, a water dispenser, a ladder, a canopy, teaching aids and an LCD TV.  They call it the Mobile Learning Centre or school-on-wheels. When the bus arrives, it parks parallel to the pavement, the television is turned to face the road and an inspirational song is played loud enough to draw the attention of children.

CBSE Class 10 - English (Comm.) Workbook - AVOIDING REPETITION

Unit 9 - AVOIDING REPETITION

A. Notice the element of repetition in the following sentences and decide whether it is acceptable or not. Give reasons in support of your opinion.

Answer:

Sentence	Opinion
1. Democracy is the government of the people, by the people, for the people.	Its a famous quote, otherwise 'the people' is repeated. (Acceptable)
2. "I want to scale Mt. Everest, I want to do scuba diving and I want to fly an aeroplane. Actually, I want to do a lot of things before I die."	'I want' is repeated number of times. (Not Acceptable)
3. New Delhi has many big, big malls.	'big' is repeated. (Only acceptable in spoken English)
4. In this article first I have tried to discuss the various causes of air pollution. Then I have tried to discuss the various effects of air-pollution and finally I have tried to discuss various ways to reduce the amount of air-pollution.

Branches of Biology

Eye of Jumping Spider
Photo by Thomas Shahan; Source: Flickr

Branches of Biology

1. Biology: study of  living organisms.

2. Botany:  study of plants.

3. Zoology: study of animals.

4. Morphology: study of internal and external structures of organisms (plants and animals) organs.

5. Histology: study of tissues.

CBSE Class 9 - Maths - Ch6 - Lines and Angles

Understanding Basic Terms.

Fill in the Blanks 

1. A point, a line and a plane are' basic concepts of geometry. These terms are _____ (well defined/undefined).

2. A line with two end points is called a _________ (line-segment/ ray).

3. A terminated line can be produced ________ (within defined limits/indefinitely).

4. A part of a line with one end point is called a _____ (line-segment/ray).