Sunday 11 May 2014

CBSE Class 11 - Computer Science with C++ - Ch1 - Computer Overview (Sumita Arora) Textbook Solutions

Computer Overview
(Sumita Arora) Textbook Solutions 7th Edn

CBSE Class 11 - Computer Science with C++ - Ch1 - Computer Overview (Sumita Arora) Textbook Solutions
credits:openclipart

Q1: Storage of 1KB means the following number of bytes:

(a) 1000
(b) 964
(c) 1024
(d) 1064

Answer: (c) 1024 bytes

Q2: One Megabyte is equivalent to

(a) 210 bytes
(b) 220 bytes
(c) 230bytes
(d) none of these

Answer: (b) 220 bytes (1 MB = 1024 KB = 210 KB =  210× 210 bytes = 220 bytes)


Q3: What do you understand by IPO cycle?

Answer: It stands of Input-Process-Output cycle. A computer follows the IPO cycle i.e. it takes data as input, processes it and takes out information as an output.



Q4: What are the functional components of a digital computer?

Sunday 4 May 2014

CBSE Class 9 - Science - CH9 - Force and Laws of Motion (MCQs)

Force and Laws of Motion

(MCQs)
CBSE Class 9 - Science - CH9 - Force and Laws of Motion (MCQs)


Q1: An object moving at constant velocity in an inertial frame must:

(a) have a net force acting on it
(b) have zero net force acting on it
(c) not have any force of gravity on it
(d) stop after some time due to gravity


Q2: When a bus starts suddenly from rest, the passengers sitting inside the bus move backwards.  This illustrates an example of

(a) Newton First Law of Motion
(b) Newton Second Law of Motion
(c) Newtons Third Law of Motion
(d) None of these


Q3: One newton is the force ____________

(a) of gravity on a 1 kg body
(b) of gravity on a 1 g body
(c) which gives a 1 g body an acceleration of 1 cm/s2
(d) which gives a 1 kg body an acceleration of 1m/s2

Sunday 13 April 2014

CBSE Class 8 - Science - Ch 6 - Combustion & Flame (MCQs)

Combustion & Flame

CBSE Class 6 - Science - Ch 6 - Combustion & Flame
Combustion & Flame
credits:openclipart
(MCQs)

Q1: Which of the following is the chemical process in which a substance reacts with oxygen to give off heat?

(a) Electrolysis
(b) Combustion
(c) Ignition
(d) Friction


Q2: The substance which undergoes combustion is called …

(a) Fuel
(b) Energy
(c) Light
(d) Matter


Q3: Which of the following is not a combustible substance?

(a) Magnesium
(b) Charcoal
(c) Petrol
(d) Glass


Q4: Which of the following has the lowest ignition temperature?

Thursday 10 April 2014

CBSE Class 10 - Science - CH13 - Magnetic Effects of Electric Current

Magnetic Effects of Electric Current

Q & A
Morse Telegraph which uses Magnetic effect of Current
image credits: classroomclipart.com
Q1: What is meant by Magnetic effect of Electric current?

Answer: It means that a current flowing in a wire produces a magnetic field around it. In other words, electric current can produce magnetism.


Q2: What is a magnet?

Answer: A magnet is an object which attracts pieces of iron, steel, nickel and cobalt.


Q3: What is a Bar magnet?

Answer: A bar magnet is a long rectangular bar of uniform cross-section which attracts pieces of iron, steel nickel and cobalt.



    Like poles repel, while unlike poles of magnets attract each other.

Q4: Define Magnetic field:

Sunday 30 March 2014

CBSE Class 10/11/12/CTET - English Grammar - Reading Comprehension

Reading Comprehension
Read the passage carefully and then answer the questions which are based on what is stated or implied in the passage. (taken from a graduate entrance exam)

The work which Gandhiji had taken in hand was not only the achievement of political freedom but the establishment of a social order based on truth and non-violence, unity and peace, equality and universal brotherhood, and maximum freedom for all. This unfinished part of his experiment was perhaps even more difficult to achieve than the achievement of freedom. In the political struggle, the fight was against a foreign power and all could and did either join in it or at least wish it a success and give it to their moral support. In establishing the social order of his pattern, there was a lively possibility of a conflict arising between groups and classes of our own people.

CBSE Class 6 - History - CH4 - IN THE EARLIEST CITIES

IN THE EARLIEST CITIES
Q & A
A Harappan Seal
credits: phillipmartin.info

Q1: Where is the site of Harappa located?

Answer: Near the Punjab border ( site is Pakistan), on the banks of the Indus River.

Q2:  Who discovered the Harappan civilization?

Answer: Harappan civilization was discovered in 1921-22 by Sir John Marshall, Rai Bahadur Daya Ram Sahni and Madho Sarup Vats.


Q3: Name any two towns found from Indus Civilization.

Answer: Towns found from Indus Civilization are:

(i) Harrapa Town, located in Larkana district on the bank of the Indus river (now in Pakistan).
(ii) Mohen-Jo-Daro town in Punjab on the bank of Ravi river.
(iii) Kalibangan Town in Rajasthan.
(iv) Dholavira Town in Kutch (Gujarat).

Sunday 23 March 2014

CBSE Class 8 - Science - CH10 - Reaching Age of Adolescence (MCQs)

Reaching Age of Adolescence 

Reaching Age of Adolescence
Adolescents
MCQs

Q1: The period of life when the body undergoes changes, leading to reproductive maturity, is called?

(a) Puberty
(b) Adolescence
(c) Metamorphosis
(d) Menarche


Q2: Onset of sexual maturity in individuals, making them capable of reproduction is termed as _________

(a) Adolescence
(b) Metamorphosis
(c) Puberty
(d) Menarche


Q3: The voice box is also known as __________

(a) Allosomes
(b) larynx
(c) Menarche
(d) Thyroid