CBSE - Class X - Science - Ch7 - Control and Coordination

Human Brain
(credits:wpclipart.com)

MCQs, NCERT Chapter Solutions, Q & A

Q1: The plant hormone which is essential for cell division is
(a) Ethylene
(b) Auxin
(c) Gibberellin
(d) Cytokinin

Answer:  (d) Cytokinin

CBSE - Class 9 - Maths - CH2 - Polynomials - Exercise 2.1

Q1: What is a polynomial?

Answer: A polynomial is an algebraic expression, in which no variables appear in denominators or under radical signs, and all variables that do appear are powers of positive integers.

Exercise 2.1

Class 9 - English (Communicative) Paper (2010)- Partly Solved

Class - IX
SA-I test Paper (2010)

ENGLISH (Communicative)

Maximum Marks : 80                                                                        Time : 3 hours

The question paper is divided into four sections :
                              Section A : Reading 20 Marks
                              Section B : Writing 20 Marks
                              Section C : Grammar 20 Marks
                              Section D : Literature 20 Marks




General  Instructions :1.All questions are compulsory.
2.Marks are indicated against each question.
3.An additional 15 minutes time has been allotted to read this question paper only.

CBSE - Class 9 - Maths - CH1 - Number Systems (Exercise 1.6)

Al-Khwarizmi invented
Algebra and Surds
(src: wikipedia)

Important points

1. If  a > 0, n and m are rational numbers, then

(i) a^m . aⁿ = a^{m + n}  

(ii) (a^m)ⁿ = a^mn

(iii) a^m / aⁿ = a^{m + n}  , m >n

(iv) a^mb^m = (ab)^m

(v) a⁰ = 1

CBSE - Class XI - Computer Science - Simple C++ Snippets (Part-3)

IO manipulators

Q1: What is the purpose of iomanip.h header file?

Answer: The header file iomanip.h defines functions and operators to format input and output streams. These are used in conjunction with insertion (<<) and extraction (>>) stream objects.

Although C++ defines a number of functions, Turbo C++ define a set of these. e.g.

• numerical base formats: hex, oct, dec
• setw: sets the width of the field
• setprecision : sets the number of decimal places you want to display.
• setiosflags: you may enable display stream flags (ios::showbase, ios::uppercase, ios::showpos)
• resetiosflags: disable stream flags.

CBSE - Class 10 - English (Comm) Workbook - Unit 7 - Conditionals

B.2 Follow the patterns discussed in B1 and write sentences using the ideas in the table below. You will need to match the items first.

A	B
go/ walk	enough/ money
write/ letter	weather/ fine
go/ cinema	get/ ticket
go/ shopping	(not) go/ out
pass exams	enough/ work

(example: I'll go for a walk if the weather is fine.)

Answer:
1. I shall write a letter if we don't have enough of work.
2. We shall go to cinema, if you get the tickets.
3. I'll go shopping tomorrow, if I earn enough money today.
4. You'll pass exams if you do not go out.

CBSE - Class 9 - Maths - CH1 - Number Systems (Ex 1.5)

Still it is unknown, if ( π + e) is rational or not?

Important Points about Rational and Irrational Numbers

1. The sum or difference of a rational number and an irrational number is always an irrational number.

If a is a rational number and √b is an irrational number then,

(i) a + √b is irrational

(ii) a - √b is irrational

(iii) a√b is irrational

(iv) a ÷ √b is irrational

(v) √b ÷ a is irrational

CBSE - Class XI - Computer Science - UNIT 1 - Computer Fundaments - MCQs

Quiz?
(img source:clker.com)

Multiple Choice Questions on Computer Fundamentals

Q1: ASCII stands for

(a) American Standard Currency for International Interchange
(b) American Standard Code for Information Interchange
(c) American Standard Codecs for Information Interchange
(d) American Standard Code for International Interchange

Class 11 - Physics - CH3 - Motion In a Straight Line

Motion in straight line!
(source:clker.com)

NCERT Chapter Solutions

Q3.1 In which of the following examples of motion, can the body be considered approximately a point object:
(a) a railway carriage moving without jerks between two stations.
(b) a monkey sitting on top of a man cycling smoothly on a circular track.
(c) a spinning cricket ball that turns sharply on hitting the ground.
(d) a tumbling beaker that has slipped off the edge of a table.

CBSE - Class 10- English (Comm.) Workbook - Integrated Grammar Practice 3

Gutenberg who invested Typography
(source:wikipedia)

Integrated Grammar Practice 3

Q1: Read this telephone conversation between two friends and complete the passage given below.

Answer:
Sunil : Where have you been? I've called you six times.
Rajeev : I was cleaning my room.
Sunil : You couldn't stop cleaning to answer your phone?
Rajeev : I was cleaning my room so I could find the phone!