CBSE Class 12 - Computer Science - C++ - Constructors and Destructors (Q and A) (#cbseNotes)

C++ - Constructors and Destructors

CBSE Class 12 - Computer Science - Questions and Answers

Q1: What is a constructor? How it is different from other member functions?

Answer: A constructor is a special member function that must be defined with the same name as the class and it is used to initialize the data members of the class. Constructor is invoked automatically when an object of a class is created. Constructors unlike other functions cannot return values, so they cannot specify a return type (not even void ).Generally, constructors are declared public.



Q2: Name the types of constructors.

Answer: Types of constructors:
① Default Constructor (No argument constructor)
② Parameterized Constructor (Overloaded Constructor)
③ Copy Constructor

CBSE Class 12 - Biology Syllabus and Q Paper Design (2017-18) (#cbseNotes)

Biology -Syllabus (2017-18)

CBSE Class 12

Here presents the prescribed syllabus for Class 12 Biology for the curriculum 2017-18.

CBSE Class 9 - Maths - Co-Ordinate Geometry (Questions and Answers) (#cbseNotes)

Coordinate Geometry

Q & A

Q1: Write the name of the point where both axes intersect?

Answer: Origin

Q2: In which quadrant(s), ordinate of a point is negative?

Answer: III and IV

Q3: If the cooridnates of of two points P(-2,3) and Q(-3, 5), then find (abscissa of P) - (abscissa of Q) 

Answer: = (-2) - (-3) = -2 + 3 = 1

CBSE Class 9 - Physics - Motion - Assignment Sheet (#cbseNotes)

Physics - Motion

Class-IX

Assignment Sheet

Q1(MCQs) : Choose the correct option from choices given.

ⅰ A particle is moving in a circular path of radius’ r’. The displacement after half a circle would be
(a) Zero
(b) π × r
(c) 2r
(d) 2 × π × r

ⅱ The numerical ratio of displacement and distance of a moving object is
(a) always greater than 1.
(b) always equal to 1.
(c) always more than 1.
(d) equal or less than 1.

ⅲ An object has moved through a finite distance
(a) its displacement must be equal to the distance moved by it.
(b) its displacement must be positive .
(c) its displacement is less than the distance moved by it.
(d) Displacement may be zero.

CBSE Class 11 - Biology -Syllabus (2017-18) (#cbsenotes)

Biology -Syllabus (2017-18)

CBSE Class 11

Here presents the prescribed syllabus for Class 11 Biology for the curriculum 2017-18.

CBSE Class 12 - Computer Science - C++ - OOPS, Class and Objects (Q and A) (#cbseNotes)

C++ - OOPS, Class and Objects

CBSE Class 12 - Computer Science - Questions and Answers

Q1: Define class.

Answer: A class is collection of data (data member) and functions (member functions or methods)
working on the data. It can be seen as a blueprint for the object. Data define the attributes and methods define behaviours of the class.


Q2: Does memory allocated when a class is created? 

Answer: No memory is allocated when a class is created. Memory is allocated only when an object is created.


Q3: Which keyword is used to begin the definition of a class?

Answer: class

CBSE Class 8 - Science - CH4 Metals and Non-Metals (Assignment) (#cbsenotes)

CBSE Class 8 - Science - CH4 Metals and Non-Metals (Assignment)

CBSE Class 8 - Maths - Squares and Square Roots (Assignment) (#cbsenotes)

CBSE Class 8 - Maths - Squares and Square Roots (Assignment)

CBSE Class 10 - English Communication - Chapter - Two Gentlemen of Verona (Summary) (#cbsenotes

Two Gentlemen of Verona

Chapter - Summary

Watch this 1954 B& W Hindi Movie about
a brother and his sister. The movies shows their
relentless efforts and great fortitude to
lead a life of self-respect.
image credits:wikipedia

T

he Author and his partner had been driving close to the city of Verona when they were ceased by two little young men, shabbily dressed, offering strawberries. The driver forewarned the author against buying fruits from these boys. The young boys were exceptionally thin however their eyes were attractive. The author's partner found that the senior one was thirteen years of age, named Nicola, the younger one was around twelve year old and his name was Jacapo. The author liked these young men and purchased a big basket of strawberries.

Next morning, the author saw those young men cleaning shoes of individuals. They had all the earmarks of being making a decent showing with regards to. The young men grinned and told the author that they performed numerous sorts of different occupations additionally like escorting tourists around the city and to show Juliet's grave. Awed, the author enlisted the young men instantly. Because of close cooperation, the author found that the young men were friendly and innocent. Underneath their happy grins, nonetheless, he could find reality, a clue of pity that challenged their age. The author did not lament his choice in light of the fact that the young men turned out to be extremely clever. The author finds their excitement to do work truly amazing. He was shocked when he saw the bow half sleeping on a breezy and forsook road, late during the evening. They had been struck by their distress to accomplish increasingly work yet he was astonished to note that they still wore torn garments and scarcely ate anything.

CBSE Class 12 - Informatics Practices - Important Abbreviations To Memorise (#cbseNotes)

IMPORTANT ABBREVIATIONS USED IN IP

ASCII: American Standard Code for Information Interchange

CSS: Cascading Style Sheet

CRM: Customer Relationship Management

CAPTCHA: Completely Automated Public Turing Test Tell Computers and Human Apart

DDL: Data Definition Language

DML: Data Manipulation Language

GNU: GNU’s not UNIX

ISCII: Indian Standard Code for Information Interchange

ICT: Information and Communication Technology

CBSE Class 7 Maths - Integers - NCERT Exercise 1.3 (#cbsenotes)

Integers

EXERCISE 1.3

CBSE Class 7 Maths

Q1: Find each of the following products:
(a) 3 × (–1)
(b) (–1) × 225
(c) (–21) × (–30)
(d) (–316) × (–1)
(e) (–15) × 0 × (–18)
(f) (–12) × (–11) × (10)
(g) 9 × (–3) × (– 6)
(h) (–18) × (–5) × (– 4)
(i) (–1) × (–2) × (–3) × 4
(j) (–3) × (–6) × (–2) × (–1)


Answer:
(a) 3 × (–1) = = –3

(b) (–1) × 225 = -225

(c) (–21) × (–30) = 630

(d) (–316) × (–1) = 316

(e) (–15) × 0 × (–18) = 0

(f) (–12) × (–11) × (10) = 132 × 10 = 1320

(g) 9 × (–3) × (– 6) = 9 × 18 = 162

(h) (–18) × (–5) × (– 4) = 90 × (–4) = –360

(i) (–1) × (–2) × (–3) × 4 = –6 × 4 = -24

(j) (–3) × (–6) × (–2) × (–1) = 18 × 2 = 36

CBSE Class 12 - Biology - Human Reproduction - Important Terms (#cbsenotes)

Human Reproduction

Important Terms

CBSE Class 12 - Biology 

Male Reproductive System
credits: Wikimedia under CC 3.0

Q1: Define Spermatogenesis.

Answer:  It is the process of production of sperms by immature male germ cells that begins at puberty (Production of sperm).

Q2: Define Spermiogenesis

Answer: It is the process of transformation of spermatids into sperm.


Q3: What is spermiation?

Answer: It is the release of sperms from seminiferous tubule.

CBSE Class 9 - Unit Test Paper English Sample Question Paper (2017-18)(#cbsepapers)

CBSE Class 9 - Unit Test Paper English Sample Question Paper (2017-18)

CBSE Class 6 Maths - Playing With Numbers - NCERT Exercise 3.7 (#cbsenotes)

Playing With Numbers

EXERCISE 3.7

CBSE Class 6 Maths

Q1: Renu purchases two bags of fertiliser of weights 75 kg and 69 kg. Find the maximum value of weight which can measure the weight of the fertiliser exact number of times.

Answer: 
 The maximum weight  = HCF of 75 and 69.
 Factors of 75   = 3 ✕ 5 ✕ 5
 Factors of 69   = 3 ✕ 69
    HCF  = 3
 ∴ the required weight is 3 kg.

Q2: Three boys step off together from the same spot. Their steps measure 63 cm, 70 cm and 77 cm respectively. What is the minimum distance each should cover so that all can cover the distance in complete steps?

CBSE Class 7 Maths - Integers - NCERT Exercise 1.2 (#cbsenotes)

Integers

EXERCISE 1.2

CBSE Class 7 Maths

Q1: 1. Write down a pair of integers whose:
(a) sum is –7
(b) difference is –10
(c) sum is 0

Answer:
(a) One such pair whose sum is -7 = -4 + (-3) = -7
(b) One such pair whose difference is -10 = -3 - 7 = 10
(c) One such pair whose sum is 0 = -5 + 5 = 0

CBSE Class 9 - Unit Test Paper Hindi(हिंदी) Sample Question Paper (2017-18) (#cbsepapers)

CBSE Class 9 - Unit Test Paper Hindi (हिंदी) Sample Question Paper (2017-18)

CBSE Class 6 Maths - Playing With Numbers - NCERT Exercise 3.6 (#cbsenotes)

Playing With Numbers

EXERCISE 3.6

CBSE Class 6 Maths

Q1: Find the HCF of the following numbers:
(a) 18, 48
(b) 30, 42
(c) 18, 60
(d) 27, 63
(e) 36, 84
(f) 34, 102
(g) 70, 105, 175
(h) 91, 112, 49
(i) 18, 54, 81
(j) 12, 45, 75

Answer:

(a) Factors of 18 = 2 × 3 × 3
Factors of 48 = 2 × 2 × 2 × 2 × 3
HCF (18, 48) = 2 × 3 = 6

(b) Factors of 30 = 2 × 3 × 5
Factors of 42 = 2 × 3 × 7
HCF (30, 42) = 2 × 3 = 6

(c) Factors of 18 = 2 × 3 × 3
Factors of 60 = 2 × 2 × 3 × 5
HCF (18, 60) = 2 × 3 = 6

CBSE Class 10 - Biology - Digestive Organs and Their Functions (#cbsenotes)

Digestive Organs and Their Functions

CBSE Class 10 - Physics - Electricity - Important Points To Remember (#cbsenotes)

Electricity - Important Points To Remember 

CBSE Class 10 - Physics 

① Electric current is defined as the amount of charge flowing through a particular cross section area in a unit time.


② The SI unit of electric current is ampere.


③ A stream of electrons moving through a conductor constitutes an electric current. In a conventional current, the direction of current is taken opposite to the direction of flow of electrons i.e. flow of positive charges from +ve terminal to -ve terminal.


④ 1 A is the flow of 6.25 × 10¹⁸ electrons per second, or 1 coulomb per second.

CBSE Class 6 Maths - Playing With Numbers - NCERT Exercise 3.5 (#cbsenotes)

Playing With Numbers

EXERCISE 3.5

CBSE Class 6 Maths

Q1: Which of the following statements are true?
(a) If a number is divisible by 3, it must be divisible by 9.
(b) If a number is divisible by 9, it must be divisible by 3.
(c) A number is divisible by 18, if it is divisible by both 3 and 6.
(d) If a number is divisible by 9 and 10 both, then it must be divisible by 90.
(e) If two numbers are co-primes, at least one of them must be prime.
(f) All numbers which are divisible by 4 must also be divisible by 8.
(g) All numbers which are divisible by 8 must also be divisible by 4.
(h) If a number exactly divides two numbers separately, it must exactly divide their sum.
(i) If a number exactly divides the sum of two numbers, it must exactly divide the two numbers separately.


Answer:
(a) ✗ (e.g. 15 is divisible by 3 but not by 9)
(b) ✔
(c) ✔
(d) ✔
(e) ✗ (e.g. 8 and 9 are co-primes and none of these are prime. )
(f) ✗
(g) ✔
(h) ✔
(i) ✗


Q2: Here are two different factor trees for 60. Write the missing numbers.