CBSE CLass 10 - English Comm. Workbook - Integrated Grammar Practice 5

Integrated Grammar Practice 5

1. Given below is a dialogue between Punit and Jai. Complete the dialogue by choosing the correct options.

Punit : Jai! (a) __________________________________________________________?

Jai : Don't you know? (b) __________________________ due to cardiac arrest.

Punit : Oh no!(c) __________________________________________________. How did this happen?

Jai : I don't know what happened. But Amit (d) ______________________ and was immediately rushed to the hospital.

Punit : Oh I am shocked. What did the doctors say?

Jai : They (e) __________________________________________________________

Answer:

CBSE Class9 - Science - CH11 - Work and Energy

WORK AND ENERGY

NCERT Solutions and Q & A


Q1: A roller coaster is shown in figure, at points i.e. ➊ and ➋, comparatively at what point 
(i) potential energy is maximum
(ii) kinetic energy  is maximum

Answer: At point ➊, comparatively kinetic energy will be maximum and at point ➋ potential energy will be maximum.

Science & Technology Objective Test (Haryana Board)/NTSE Science Quiz-17

Science & Technology Objective Test

(Haryana Board)

NTSE Science Quiz-17

Q1: The speed of light in vacuum is

(a) 3 ×10⁸ m/s
(b) 3 ×10¹⁰ m/s
(c) 3 ×10⁵ m/s
(d) Zero

Q2: The angle of incidence for a ray of light is 45°. The angle of Reflection will be:

(a) 90°
(b) 45°
(c) 180°
(d) 0°

English Grammar Quiz - Cries of Animals and Birds

English Grammar Quiz - Cries of Animals and Birds

Choose the right word  from the given options which correctly expresses the cry of the animal or bird.

Q1: Horses

(a) bleat
(b) neigh
(c) howl
(d) squeak

Q2: Frogs

(a) squeal

(b) croak
(c) grunt
(d) cluck

CBSE Class 8 - Science - CH13 - Sound

Sound

loud music can seriously
damage your ears
image credits:openclipart

(NCERT Chapter Answers)

Q1. Choose the correct answer :
       Sound can travel through
        (a) gases only
        (b) solids only
        (c) liquids only
        (d) solids, liquids and gases.

Answer: (d) Sound can travel through solids, liquids, and gases as it requires a medium to travel through. Solid, liquid and gas provide the medium for sound to travel. Sound cannot travel in vacuum.

The Fox and The Crow Story in Sanskrit (लोमश: एवं काक:)

story-1                       लोमश: एवं काक:

एकस्य काकस्य मुखे रोटिका आसीत । स: वृक्षस्य उपरि शाखायां अतिष्ठत् | तत: एक: लोमश: तत्र आगच्छत | लोमश: काकस्य मुखे रोटिकां दृष्टवा अचिन्तयत् यदि ऐष: मुखम् विवृन्त करोति तदा अस्य रोटिका नीचै: पतिष्यति , अहं च खादिष्यामि |  

स: उच्चै: मुखम् कृत्वा वदति, " हे काक ! त्वं तु अति सुन्दर: असि | तव स्वर: अपि मधुर: भवेत् |"  

CBSE Class 9 - Science - CH3 - Atoms and Molecules (Worksheet)

Atoms and Molecules (Worksheet)

Water Molecule

Fill in the blanks

1. An element has only one type of __________.

2. According to law of definite proportions, in a chemical substance the elements are always present in __________ proportions by mass.

3. According to Dalton's atomic theory, atoms of different elements differ in ______, size and chemical properties.

4. The chemical symbol of flourine is ________.

5. The chemical symbol of mercury is _________.