Sunday 18 June 2017

CBSE Class 10/9/8 - English - Reading Comprehension (Unseen Poem - 3) (#cbseNotes)

Reading Comprehension (Unseen Poem - 3)

CBSE Class 10/9/8 - English - Reading Comprehension (Unseen Poem - 3) (#cbseNotes)

Question: Read the poem below:

When storm‐clouds rumble in the sky and
June showers come down
The moist east wind comes marching over the heath
to blow its bagpipes amongst the bamboos
The crowds of flowers come out of a sudden
from nobody knows where,
and dance upon the grass in wild glee.

Mother, I really think the flowers go to school underground
They do their lessons with doors shut,
and if they want to come out to play before it is time,
their master makes them stand in a corner.
When the rains come they have their holidays.

Branches clash together in the forest
and the leaves rustle in the wild wind,
the thunder‐clouds clap their giant hands and
the flower children rush out in dresses of
pink, yellow and white.

Do you know, mother, their home is in the sky,
Where the stars are.

Haven’t you seen how eager they are to get there ?
Don’t you know why they
are in such a hurry ?
Of course, I can guess to whom they raise their arms
they have their mother
as I have my own .

Rabindranath Tagore


Saturday 17 June 2017

CBSE Class 10 - Physics - Electricity - (Holiday Assignment) (#cbseNotes)

Electricity - (Holiday Assignment)

CBSE Class 10 - Physics - Electricity - (Holiday Assignment) (#cbseNotes)


Q1: Two metallic wires A and B of same material are connected in parallel. Wire A has length l and radius r and wire B has length 2l and radius 2r. Compare the ratio of the total resistance of parallel combination and the resistance of wire A.

Answer:
Wire A:
Length = l
Radius = r
Area   = πr²
R₁   = ρ  x l /(πr²)

Wire B:
Length = 2l
Radius = 2r
Area = π(2r)² = 4πr²
R₂   = ρ  x 2l /(4πr²) = ρ  x l /(2πr²)

Let Rₚ = effective resistance of parallel combination
1/Rₚ = 1/R₁ + 1/R₂

1/Rₚ = (πr²)/ρl + (2πr²)/ρl

Rₚ = ρl/(3πr²)

Friday 16 June 2017

CBSE Class 12 - Accountancy Sample Question Paper (2014-15) (#cbsePapers)

CBSE Class 12 - Accountancy Sample Question Paper (2014-15) (#cbsePapers)

CBSE Class 12 - Accountancy Sample Question Paper (2014-15)





CBSE Class 9 - Physics - Chapter - Force and Laws of Motion (Worksheet) (#cbseNotes)

Force and Laws of Motion
(Worksheet)

CBSE Class 9 - Physics - Chapter - Force and Laws of Motion (Worksheet) (#cbseNotes)


Q: Fill in the blanks with suitable choice given in brackets.

1: The product of mass and velocity of a body is called __________. (momentum/force)


2: The property by the virtue of which an object tends to remain in the state of rest or of uniform motion unless acted upon by some force is called __________. (impulse/ inertia)


3: The SI unit of _________ is kilogram meters per second i.e. kg m/s (momentum/ force)


4: Momentum is a _________ (scalar/ vector) quantity and is directed along the __________ (direction/ magnitude) of velocity.


5: The total momentum of the bullet and the gun before firing would be _________ (zero/ positive / negative) because both of them ar at rest.

Wednesday 14 June 2017

CBSE Class 12 - Chemistry - Chapter 1 - Solid State - Crystalline vs Amorphous Solids (#cbseNotes)

Crystalline Solids vs Amorphous Solids

Class 12 - Chemistry - Chapter 1 - Solid State

CBSE Class 12 - Chemistry - Chapter 1 - Solid State - Crystalline vs Amorphous Solids (#cbseNotes)

Crystalline Solids Amorphous Solids
1. They have definite and regular geometry due to definite and orderly arrangement of atoms, ions or molecules in three dimensional space. 1. They do not have any pattern of arrangement of atoms, ions or molecules and thus, do not have any definite geometrical shape.
2. They have sharp melting points and change abruptly into liquids. 2. Amorphous solids do not have sharp melting points and do not change abruptly into liquids.

Tuesday 13 June 2017

CBSE Class 9 - English Grammar - Tenses (Worksheet) (#cbseNotes)

Tenses

Worksheet (Holidays Homework)

CBSE Class 9 - English Grammar - Tenses (Worksheet) (#cbseNotes)


Q Fill in the blanks in the following paragraphs with the most appropriate form of verbs.

1 My mother a)_______(do) a lot of work. She b)______(cook)food and c)________(clean) the house. Whenever I d)______(fallen) I'll, she looks after me well. She e)______(be) a religious person. She f) ______(narrate) many interesting stories from the Ramayana and the Mahabharata to us at bedtime. Right now, she is not at home.


2: I a)________. (run) for a bus when I b) ______ (hit) my foot on something on the pavement and c) _____ ( fall) over. I tried to get up but d)______( move ). I had terrible pain in my left foot. I e)_____( sprain) my ankle very badly. I was limping when some passers-by f)______(notice) me.

CBSE Class 8 - Science - CH4 Metals and Non-Metals (NCERT Exemplar Answers) (#cbseNotes)

Metals and Non-Metals 
NCERT Exemplar Answers
CBSE Class 8 - Science - CH4 Metals and Non-Metals (NCERT Exemplar Answers) (#cbseNotes)

Multiple Choice Questions

Q1: Which of the following is not a metal?

(a) copper
(b) sulphur
(c) aluminium
(d) iron


Q2: The substance that will be flattened on beating with a hammer is

(a) crystal of iodine
(b) lump of sulphur
(c) piece of coal
(d) zinc granule