Sunday, November 25, 2007

SAMPLE QUESTION PAPER (2)


X Science (Theory)
-RAVI MOHAN TGT SCIENCE
Time – 21/2 Max.Marks - 60
General Instructions :-
1. The question paper comprises of two sections A and B. You are to attempt both the sections.
2. All questions are compulsory.
3. There is no overall choice. However internal choice has been provided in the some questions. You are the attempt only one options in such questions .
4. You are advised to attempt all the question of section A and section B separately.
5. Questions number 1-6 in section A and 17-19 in section B are very short answer questions and carry one marks each
6. Question number 7-10 in section A and 20-24 in section B are short answer questions and carry two marks each.
7. Question number 11-14 in section A and 25-26 in section B are short answer questions and carry three marks each.
8. Question number 15 and 16 in section A and 27 in section B are short answer questions and carry five marks each.

SECTION-A
Name one metal which displaces copper from copper sulphate solution and one metal which does not.
Why does carbon form largest number of compounds?
Name the organic compound used as preservative in pickle and has molecular formula C2H4O2 .
What constitutes the field of a magnet?
Why is tungsten metal selected for making filaments of incandescent lamp bulbs?
Two thin lenses of power +2.5 D and -2.5 D are placed in contact. Find the power and focal length of combination.
Write the process to convert an unsaturated hydrocarbon into saturated hydrocarbon. Give its industrial application.
What do you mean by a precipitation reaction? Explain giving example.
Observe the following diagram and answer questions given below :-
















What the distance OF is called?
Write the position and nature of the image formed.
Refractive index of water is 4/3 and glass is 3/2 with respect to air. What is refractive index of glass with respect to water?
Atomic radii of the elements of the second period are given below:-
Period – II (elements)
Atomic Radii (pm)











Arrange them in decreasing order of their atomic radii.
Which elements have the largest and smallest atoms?
How does the atomic radius change as you go from left to right in a period?
(a) When does an electric short circuit occur?
(b) Why is it necessary to earthing appliances?
Six solutions A,B,C,D,E and F when tested with universal indicator showed pH as 4,1,11,2,7 and 9 respectively. Which solution -
a. Neutral
b.Strong acid
c.Strong base
d. Weak base
f. Arrange them in order of increasing hydrogen ion concentrations.
An object 3 cm high is placed at a distance of 20 cm in front of a convex lens of focal length 12 cm. Find the position, Nature and size of the image formed.
What are factors affecting the magnetic field produced by a current carrying conductor? Write the magnetic field due to infinitely long current carrying conductor.
OR Draw the schematic diagram of a circuit containing the following electrical components:- (a) a resistance (b) a voltmeter (c) a cell (d) an electric bulb (e) an ammeter (f) plug key. Write the formula to calculate the effective resistance of two resistances connected in series and parallel.
Write the chemical name and formula of Plaster of Paris. Write its two uses and its important properties.
OR
Explain why :-
(i) 24 carrot gold cannot be used for making ornaments.
(ii) Aluminium is used for making cooking utensils.
(iii) Conc. HNO3 can be stored in Aluminium container.
(iv) Aluminium is used for making electrical wires.
(v) Aluminium cannot be extracted by reducing alumina with carbon.


SECTION-B


Name the juice stored in gallbladder. Where it is secreted?
What is the cause of muscle fatigue after hard physical work?
What is acid rain? Name the gases responsible for acid rain.
Why we say energy flow in the biosphere is ‘Unidirectional’.
Suggest any two ways to strike a balance between environment and development.
What is nucleotide? Name the type of nucleotide present in DNA and RNA.
Define the terms unisexual and bisexual giving one example of each.
Write one difference between the following :-
Arteries & Veins.
Role of chloroplast & mitochondria.

Draw a diagram of a nerve cell and label the following parts :-
Axon
Cyton
Dendrites
Ranvier’s node.
State the two vital functions of the human kidney. Name the procedure used in the working of artificial kidney.
Given below is a schematic representation of circulatory system in man. Study the diagram and answer the following:-








i. Label the parts 1-6
ii. What is the specific name of blood circulation between heart and lung?
iii. Name covering which protect the heart. OR
What are fossils? Give two uses of fossils. How does the study of fossils provide evidence in favour of organic evolution?








Monday, November 19, 2007

SAMPLE QUESTION PAPER

रवि मोहन

X
Science (Theory)
Time – 2.30 Max.Marks - 60
General Instructions :-
The question paper comprises of two sections A and B. You are to attempt both the sections.
All questions are compulsory.
There is no overall choice. However internal choice has been provided in the some questions. You are the attempt only one options in such questions .
You are advised to attempt all the question of section A and section B separately.
Questions number 1-6 in section A and 17-19 in section B are very short answer questions and carry one marks each
Question number 7-10 in section A and 20-24 in section B are short answer questions and carry two marks each.
Question number 11-14 in section A and 25-26 in section B are short answer questions and carry three marks each.
Question number 15 and 16 in section A and 27 in section B are short answer questions and carry five marks each.

SECTION-A
1. If the magnification of a body of size 1m is 2. What is the size of the image?
2. What do you mean by “rancidity”?
3. what is double the amount of gas v collected in one of the test tubes on electrolysis of water ? Name this gas. 4. Name the most metallic and most non- metallic element in the periodic table.
5. Name an acid base indicator prepared at home. 6. What is meant by the statement that “potential difference between points A & B in an electric field is 1 Volt”?
7. How many 176 resistors (in parallel) are required to carry 5A in 220 V line?
8. Why should curd and sour substance not be kept in brass and copper vessels?
9. Two electric lamps of 100 W and 25W respectively are joined in parallel to supply of 200 V calculate the total current flowing through the circuit .
10. What happens when aluminium metal reacts with sodium hydroxide? Give the equation for the chemical reaction?
11. Describe with the help of a labeled diagram the method of refining of metals by electrolytic method taking copper as an example.
12. Here are given some elements belonging to a specific group and period in the periodic table
Li Be B C N O F Na Mg Al Si P S Cl
Give answer:
(i) Which is more reactive between F & Cl?
(ii) The most metallic and the most non-metallic element.
(iii) Element of smallest atomic size and the element of largest atomic size? 13. A concave mirror of focal length 15 cm. forms and image of an object kept at a distance of 10 cm. from the mirror . Find the position, natural and size of image formed by it.
14. Give three advantages of nuclear fusion process over nuclear fission to generate electricity.
15. What is ohm’s law? Light an experiment to verify ohm’s law.
Or
What is solenoid? Draw the magnetic field lines due to a current carrying solenoid. Write some properties of magnetic field lines…
16. Explain the following terms with suitable examples:
(a) Oxidation (b)Reduction (c) Oxidizing agent (d) Reducing agent (e) chemical equation
Or
Define pH. Explain the role of pH in every day life.

SECTION - B

17. Give an example of a vestigial organ present in human.
18. What is a food chain?
19. Where does fertilization takes place in the human beings?
20. What is the roll of decomposers in an ecosystem?
21. What are fossils? what do they tell us about the process of evolution ?
22. Write the cause of depletion of ozone layer in the atmosphere.
23. How does intestinal juice contribute to the digestion of proteins?
24. Describe double fertilization in plant.
25. Draw a well labeled diagram of the longitudinal section of a flower and briefly write about its sexual whorls .
26. Define reflex action with suitable examples.
27. (a) Name the blood groups under ABO system.
(b) Differentiate between universal donor and universal recipient under this system.
Or
Explain the human digestive system with the help of a diagram.




























Saturday, November 17, 2007

जीवन मे आगे बढ़ना है

शिखा शर्मा, कक्षा 12

उगते सूरज को देख–देख मन मे मेरे यों आता है,
कि इस सूरज की तरह मुझे भी दुनिया को रोशन करना है ।
सपने देखे बहुत हैं मैने, अब सच्चाई मे गढ़ना है,
जीवन में आगे बढ़ना है, जीवन मे आगे बढ़ना है ।

मॉ–बाप ने किया बहुत कुछ, त्याग दिए अपने सारे सुख,
उनके सीने को चौड़ा करके, जीवन में खुशियॉ भरना है ।
जो प्यार दिया उन्होंने मुझको, उस प्यार को दुगुना करना है,
जीवन में आगे बढ़ना है, जीवन में आगे बढ़ना है।

उठ रही है उमंगें, कुछ करने को सब के लिए ,
उठती हुई उमंगों को हृदय–सागर में भरना है ।
मन विचलित न हो कभी, मन एकाग्र लक्ष्य पर करना है,
जीवन में आगे बढ़ना है, जीवन में आगे बढ़ना है।
मन उस मॉझी को ढूँढ़ रहा जो जीवन–नैया को पार करे ,
मिलकर उस नाविक के साथ मुझे मेहनत में रंग भरना है ।

केन्द्रीय विद्यालय ओ ई एफ हजरतपुर, फिरोजाबाद ।


अगर पेड़ न होते ।




शिशिर, कक्षा 8

अगर पेड़ न होते,
तो जीवन न होता ।
अगर पेड़ न होते,
तो पर्यावरण न होता ।

अनोखी पृथ्वी की शान हैं पेड़,
जीने का वरदान है पेड़ ।
इसलिए तो कवियों ने कहा है –
वृक्ष धरा के भूषण हैं,
करते दूर प्रदूषण है ।

पेड़ बिना न होती हवा ,
न होता खाना–पीना ,
भूखे ही हम मर जाते,
ऐसा जीना क्या जीना ।

पेड़ पर रहते हैं सब पंछी,
पृथ्वी की शोभा जो बढ़ाए ।
पेड़ के बिना ये भला कहॉ,
अपना आशियाना बनाएँ ।

पेड़ है तो जीवन है,
इसलिए खूब पेड़ लगाएँ ।
धरती हरी–भरी दिखे,
पृथ्वी को स्वर्ग बनाएँ ।

जीवन को सफल बनाना है,
तो पेड़ जरूर लगाना है ।
आसमान में जितने तारें,
उतने होगे पेड़ हमारे ।
‘वृक्ष धरा का गहना है’,
बस यही हमारा कहना है ।


केन्द्रीय विद्यालय ओ ई एफ हजरतपुर, फिरोजाबाद ।

Wednesday, November 14, 2007

SUCCESSFUL TEACHERS

SHRI P R L GUPTA

The most successful teachers share some common characteristics. Here are the top six keys to being a successful teacher. Every teacher can benefit from focusing on these important qualities. Success in teaching, as in most areas of life, depends almost entirely on your attitude and your approach.
1) Sense of Humor
A sense of humor can help you become a successful teacher. Your sense of humor can relieve tense classroom situations before they become disruptions. A sense of humor will also make class more enjoyable for your students and possibly make students look forward to attending and paying attention. Most importantly, a sense of humor will allow you to see the joy in life and make you a happier person as you progress through this sometimes stressful career.
2) A Positive Attitutude
A positive attitude is a great asset in life. You will be thrown many curve balls in life and especially in the teaching profession. A positive attitude will help you cope with these in the best way. For example, you may find out the first day of school that you are teaching Algebra 2 instead of Algebra 1. This would not be an ideal situation, but a teacher with the right attitude would try to focus on getting through the first day without negatively impacting the students.
3) High Expectations
An effective teacher must have high expectations. You should strive to raise the bar for your students. If you expect less effort you will receive less effort. You should work on an attitude that says that you know students can achieve to your level of expectations, thereby giving them a sense of confidence too. This is not to say that you should create unrealistic expectations. However, your expectations will be one of the key factors in helping students learn and achieve.
4) Consistency
In order to create a positive learning environment your students should know what to expect from you each day. You need to be consistent. This will create a safe learning environment for the students and they will be more likely to succeed. It is amazing that students can adapt to teachers throughout the day that range from strict to easy. However, they will dislike an environment in which the rules are constantly changing.
5) Fairness
Many people confuse fairness and consistency. A consistent teacher is the same person from day to day. A fair teacher treats students equally in the same situation. For example, students complain of unfairness when teachers treat one gender or group of students differently. It would be terribly unfair to go easier on the football players in a class than on the cheerleaders. Students pick up on this so quickly, so be careful of being labelled unfair.
6) Flexibility
One of the tenets of teaching should be that everything is in a constant state of change. Interruptions and disruptions are the norm and very few days are 'typical'. Therefore, a flexible attitude is important not only for your stress level but also for your students who expect you to be in charge and take control of any situation
.

LOOK FOR MORE TROUBLES

Shri P R L GUPTA

Be thankful for the troubles of your job. They provide about half your income. Because if it were not for the things that go wrong, the difficult people you have to deal with, and the problems and unpleasantness of your working day, someone could be found to handle your job for half of what you are being paid. It takes intelligence, resourcefulness, patience, tact and courage to meet the troubles of any job. That is why you hold your present job. And it may be the reason you aren’t holding down and even bigger one. If all of us would start to look for more troubles, and learn to handle them cheerfully and with good judgment, as opportunities rather than irritations, we should find ourselves getting ahead at a surprising rate. For it is a fact that there are plenty of the jobs waiting for men and women who aren’t afraid of the troubles connected with them.

Saturday, November 3, 2007

10.गिरगिट का सुझाव

10.गिरगिट का सुझाव
नवीन चतुर्वेदी

खेल समिति में
गिरगिट जी ने
नया शिगूफा छोडा
और बहस की धारा को
एक नई दिशा में मोडा।
बोले–‘‘ छोडो खेल पुराने
नए खेल कुछ खेलो
रंग बदलने की स्पर्धा
भी तुम उनमें ले लो।

>>>>>>>>>>>

8.खूब खिचेंगे कान

–नवीन चतुर्वेदी

दीदी बोली मुन्नू से
तू सोता लंबी तान
अभी नहीं कुछ भी बिगडा है
मेरी बातें मान।
सारे बच्चे पास होएंगे
तू होएगा फेल
और तभी फिर खूब खिचेंगे
तेरे लंबे कान।

7.चुनमुन

नवीन चतुर्वेदी

सुबह हो गई,
कोहरे की चादर फिर भी छाई है।
चुनमुन ने
सोते रहने की कसम उठाई है।
अब जब सूरज
उठा रहा है कोहरे की चादर
तब चुनमुन की दादी
उसे उठाने आईं है।

6.चूहे का सूट

–नवीन चतुर्वेदी

सर्दी पडी बहुत, चूहे ने
अपना सूट सिलाया।
दो कतरन ऊनी कपडे की
चार रेशमी लाया।
दर्जी बोला–‘‘समय नहीं है,
कहीं और तुम जाओ,
और किसी छोटे दर्जी से
अपना सूट सिलाओ।‘‘
अपने पैने दांत दिखा
जब चूहे ने धमकाया
नाप लिया फौरन चूहे का
मन ही मन घबराया।

5. जाडे का सूरज

नवीन चतुर्वेदी

जाडे के मारे सूरज ने
ओढ लिया कुहरा।
मुर्गे ने जब बांग लगाई
सूरज बन गया बहरा।
आठ बजे के बाद दिखाया
उसने अपना चेहरा
और शाम के छह बजते ही
भागा, फिर ना ठहरा।



4-मैराथन दौड

–नवीन चतुर्वेदी

थी मैराथन दौड
सभी प्रतियोगी थे तैयार।
चीता था तैयार
और थे घोडे भी तैयार।
ऊंट सधा बैठा,
बैठा था, सिंह फुलाए सीना।
चूहा भी था एक ट्रैक पर
नाम था जिसका टीना।
गणपति जी की कथा याद थी
खुश था मन ही मन।
होते ही संकेत,
सभी प्रतियोगी दौड पडे थे।
केवल चूहे राम
वहीं पर अडे खडे थे।
खडा देख निर्णायक को
दौडे चूहे राम
चक्कर सात लगाए उसके
चूहे ने अविराम,
किन्तु गया बेकार सभी
मैराथन जीता घोडा
तब चूहे ने पत्थर से
अपना ही सिर फोड़ा।

3.गोला फेंक

–नवीन चतुर्वेदी

गोला फेंक दिया
फिर अप्पू जी ने सबसे दूर
बाघ और भालू जी भूले
अपना सभी गरूर।

2. हाथी का पाजामा

–नवीन चतुर्वेदी

हाथी ने अपनी शादी में
पाजामा सिलवाया
नाप लिया बंदर मामा ने
उन्हें पसीना आया।
बोले–‘‘इसमें तो लग जाएंगे
पूरे दो थान।‘‘
हाथी बोला–‘‘एक थान में
मामा जाओ मान।‘‘
बंदर बोला–‘‘नही–नहीं फिर
अंडरवियर सिलाओ
उसे पहनकर धूम–धाम से
ब्याह रचाने जाओ।”

1. बंदर मामा धम्म धडाम

नवीन चतुर्वेदी

बंदर कूदा डाली–डाली
मारी एक छलांग
नीचे से गदहा चिल्लाया
मामा मेरा सलाम,
बंदर मामा ने सलाम को
ज्यों ही हाथ उठाया
फिसला पैर , गिरे धरती पर
सीधे धम्म धडाम।

****