CBSE Class 9 - Science - CH 14 Natural Resources (NCERT Q and A)

Natural Resources

(Q & A, NCERT Chapter Solution)

Ozone Layer
credits:classroomclipart

Q1: What is lithosphere?

Answer:  The outer crust of the Earth is called the lithosphere.


Q2: What is hydrosphere?

Answer: The water available on the earth's surface as well as underground water comprise together as hydrosphere. Water covers 75% of the Earth's surface.


Q3: What is the atmosphere?

Answer: The envelope of air that surrounds the earth is called atmosphere.


Q4: List the four zones of the atmosphere.

Answer: Four zones of the atmosphere are:

1. Troposphere
2. Stratosphere
3. Mesosphere
4. Thermosphere

Q5:  What is biosphere?

Answer: This life-supporting zone of the Earth where the atmosphere, the hydrosphere and the lithosphere interact and make life possible, is known as the biosphere. It accommodates several types of living organisms which remain dependent on natural resources. The biosphere ranges between 6km, above sea level and 10kms below the sea.

CBSE Class 9/10 - JSTS Exam (GK-3) - 2012-13

GENERAL KNOWLEDGE

(Part-3)(JSTS Scholarship Exam - 2012-13)

You may access GK (Part-1),   GK (Part-2)

Q31: Cell Secretions are processed and packed up by

(a) Golgi apparatus
(b) Nucleus
(c) Ribosomes
(d) Mitochondria




Q32: The temperature range of moon is

(a) -10°C to 10°C
(b) -90°C to 10°C
(c) -190°C to 110°C
(d) -50°C to 250°C





Q33: The Constitution of India came into force on

(a) 26 Nov. 1949
(b) 15 Aug.  1947
(c) 26 Jan.  1947
(d) 26 Jan. 1950





Q34: The National Emblem of India has been taken from the pillar of Sarnath which had:

(a)  An Elephant
(b) Four Lions
(c) A Lion
(d) A Bull

CBSE Class 7/8/9 - French Grammar-2 (Worksheet)

French Grammar 

(Worksheet-2)

(See answers below)

[Prepositions]
Q1: Complétez avec à, au, à la, à l’, aux...
1. Ils vont ______ opéra.
2. Tu vas _____ Canada ?
3. Tu regardes les programmes ______ télé.
4. Il habite _____ Nice.
5. Alex et Peter vont _____ école.
6. Nous allons ________ cinéma ce soir.
7. Ils mangent _______ restaurant.

[Ordinal and cardinal numbers]
Q2:  Complétez les phrases avec les nombres ordinaux:

1. Lundi est le _______ jour de la semaine.
2. Vendredi est le ________ jour de la semaine.
3. Mars est le _____ mois de l'année.
4. Septembre est le _______ mois de l'année.
5. Décembre est le ________ mois de l'année.

CBSE - Class 9 - हिंदी (ब) - काव्यांश (Hindi-B - Poem Comprehension)

 काव्यांश

[CBSE 2011]
प्र1: निम्नलिखित काव्यांश के संधर्भ में पूछे गए प्रशनों के सही उत्तर वाले विकल्प चुन कर लिखिए ।

मैं  मजदूर मुझे देवों की बस्ती से क्या
अगणित बार धरा पर मैंने स्वर्ग बनाये ।
अम्बर में जितने तारे, उतने वर्षों से
मेरे पुरखों ने धरती का रूप सँवारा ।

धरती को सुंदरतम करने की ममता में
बिता चुका  है कई पीढ़ियाँ, वंश हमारा। 
और आगे आने वाली सदियों में
मेरे वंशज धरती का उद्धार करेंगे ।

इस प्यासी धरती के हित में ही लाया था
हिमगिरी चीर सुखद गंगा की निर्मल धारा ।
मैंने रेगिस्तानों की रेती धो - धोकर
वन्ध्या धरती पर भी स्वर्णिम पुष्प खिलाए ।
मैं  मजदूर मुझे देवों की बस्ती से क्या?

1. काव्यांश के लिए उपयुक्त शीर्षक होगा -

(क) मज़दूर और देव
(ख) मजदूर के कर्त्तव्य
(ग) मजदूर की आत्मकथा
(घ) धरती और मजदूर




2. मज़दूर क्या यह आशा नहीं करता -

CBSE - Class 9 - PSA Quiz (Quantitative Reasoning)

Quantitative Reasoning - PSA Quiz

Tick (✓) the right option to fill in the blanks:

[Seating arrangement Q1-2]

• U,V,W,X,Y and Z are seated in a circle facing towards the centre. 
• U and W are seated next to each other.
• Y and V are seated next to each other.
• V is immediate left of Z.
• There are two persons between X and Y.
• U is not seated next to Y.

Q1: Who is immediate left of Y?
(a) W
(b) V
(c) Z
(d) cannot find it.


Q2: How many persons are seated between Z and Y if we go anti-clockwise from Z to Y?
(a) 1
(b) 2
(c) 3
(d) none of these


[ODD ONE OUT - Q3-5]
In questions 3 to 5, find the odd word or number from the given choices.

CBSE Class 9 - Science - Value Based Questions -1

Science - Value Based Questions

(Part-1)
[Gravitation, Pressure and Archimedes Principle]

Bed Of Nails - A circus trick
image credits: Jendi's Journal

Q1:  Bhola was impressed by the miracle performed by Baba Bandar Nath when Baba lied down on a bed of nails. The nails did not hurt him. Bhola narrated about this miracle to his friend Rithik. Rithik explained to Bhola that there is no magic or miracle here. Even he can also do the same trick.

(a) Why did Rithik say that there is no 'miracle' in this trick? Why did Baba Bandar Nath did not hurt himself?
(b) Which quality is shown by Rithik here?

Answer:
(a) Rithik is right that there is no miracle here. We know that pressure is defined as force acting per unit area. If you step up on a nail, the entire body weight exerts more pressure because the area of nail tip is very small. In case of bed of nails, the pressure exerted by the weight of the body is distributed among the hundreds or thousands of nails lying close to each other. Thus the net pressure on a nail is very small.

CBSE Class 7/8/9/10 - English - Active/Passive Voice

Active/Passive Voice

(Solution of Exercise from Textbook Grammar Plus 7.) 

Q1: Rewrite these sentences in the passive voice.

1. Rita sings a song.
2. Children love the rainbow.
3. Granny told us an interesting story.
4. Call in the doctor at once.
5. Everyone loved Mother Teresa.
6. The wolf chased the sheep.
7. Sujata drew a village scene.
8. Rakesh made special Kashmiri tea for everyone.
9. Neha's father praised her.
10. People formed a queue on the road.
11. Hanif drank the bitter medicine in one gulp.
12. We elected Balachandran as our team leader.
13. Santa Claus gave toffees to all the children in the shop.
14. Grandfather called up Ayushi to wish her on her birthday.
15. We all know the facts.
16. The people crowned him the king.
17. Suman is reading a book.
18. Your mother taught us Mathematics.
19. The gardener looks after the flowers.

 Answers: