Type of Hydrogen- Green Hydrogen Brown Hydrogen Grey Hydrogen Blue Hydrogen

Types of Hydrogen on the basis of production

Green Hydrogen

It is produced by electrolysis of water using renewable energy like wind, solar energy. India is front runner for production of green hydrogen.

Brown Hydrogen

It is hydrogen produced by using of coal. Emission gases are released in atmosphere.

Grey Hydrogen

It is hydrogen produced by using natural gas. Emission gases are released into atmosphere.

Blue Hydrogen

In this hydrogen is produced by using natural gas, and emission gases are absorbed and not to be released into atmosphere.

Jawahar Navodaya Vidyalaya online application form for admission class 6

 नवोदय विद्यालय समिति ने सत्र 2024-25 के लिए जवाहर नवोदय विद्यालय चयन परीक्षा 2024-25  वर्ग  6  में प्रवेश के लिए Online आवेदन आमंत्रित किया है |। आवेदन जमा करने के लिए ऑनलाइन पोर्टल 

16 Sept,2024 तक कर सकते। आवेदन  नवोदय विद्यालय समिति  की वेबसाइट पर जाकर मुफ्त में जमा किया जा सकता है। 

 

* Studying in Class 5 in academic year 2024-25 and completing the session from Govt./Govt. recognized school in the same district , where JNV is functioning and to which candidate is seeking admission.

* Studied full academic session in which class and passed classes III& IV from Govt./ Govt. recognized and n born before 01-05-2012 and after 30-04-2014 (Both dates are inclusive). 

JNVST Prospects	Click here
Last date Apply	16 Sept,2024
Examination Date	18.01.2025
Click on the link to fill	Click Here
Apply online/ registration	Click Here

     

 Last years question paper- click here to see and download

Registration -  click

योग्यता :

* शैक्षणिक वर्ष 2024-25 में कक्षा 5 में अध्ययनरत

* विद्यालय  सरकार/सरकार के द्वारा मान्यता प्राप्त से सत्र पूरा किया हो । 

* छात्र को उसी जिले आवेदन में आवेदन करना होगा जहां वह वर्त्तमान में अध्ययनरत है तथा  जहां  जवाहर नवोदय विद्यालय संचालित है |

* छात्र वर्ग 3 और  4 का पूर्ण शैक्षणिक सत्र का अध्ययन  सरकार या  सरकार द्वारा मान्यता प्राप्त विद्यालय से  उत्तीर्ण की हो |

आवेदन कैसे करें :

नीचे दिए गए लिंक से आवेदन करने हेतु format download करें और जिस विद्यालय में अभ्यर्थी अध्ययनरत है , उस विद्यालय के प्रधानध्यापक या शिक्षक से सही -सही सूचनाएं अंकित कराएं तदुपरान्त online form Apply कराएं | 

Format link : Download 

Important Information

A. The following documents in soft form (.JPG format of size between 10 to 100 kb) may be kept ready for registration:                                                                                                                 

• Certificate verified by the Head Master mentioning the details of candidate in the prescribed format                                                                                                                                                       

 • Photograph                                                                                                                                                               

• Signature of parent                                                                                                                                                

• Signature of candidate                                                                                                                                       

• Aadhaar details/ Residence certificate issued by competent Government authority. 

Certificate to be uploaded -- Click here to download

B. Instructions for the candidates:

1. 1. The process of submission of online application involves only single stage.
   2. The reservations to the OBC candidates shall be implemented as per Central List. The OBC candidates not included in Central list should apply as General Candidate.
   3. Keep the following scanned copies ready before start filling the application.
      1. Candidate's signature. (Size of signature should be between 10-100 kb for photo)
      2. Parent's signature. (Size of signature should be between 10-100 kb for photo)
      3. Candidate's photograph. (Size of images should be between 10-100 kb for photo)
      4. Certificate signed by parent and candidate. (Size of images should be between 50-300 kb for photo)

2. For further details please read Prospectus  : Click Here

आवश्‍यक सूचनाऐं

1. अपलोड करने के लिए प्रमाण-पत्र -- (डाउनलोड करने हेतु यहाँ क्‍लिक करें)

2. अभ्‍यर्थियों के लिए निर्देश-:

   1. ऑनलाइन आवेदन प्रक्रिया का केवल एक ही चरण है।
   2. अन्‍य पिछड़ा वर्ग के अभ्‍यर्थियों को आरक्षण केवल केन्‍द्रीय सूची के अनुसार दिया जाएगा। केन्‍द्रीय सूची के अन्‍तर्गत नहीं आने वाले अन्‍य पिछड़ा वर्ग के अभ्‍यर्थी कृपया सामान्‍य अभ्‍यर्थी के रूप में आवेदन करें।
   3. आवेदन प्रारम्‍भ करने से पहले कृपया निम्‍नानुसार स्‍केंन कॉपी तैयार रखें।
      1. अभ्‍यर्थी के हस्‍ताक्षर (हस्‍ताक्षर की इमेज का आकार 10-100 के.बी के बीच होना चाहिए।)
      2. अभिभावक के हस्‍ताक्षर (हस्‍ताक्षर की इमेज का आकार 10-100 के.बी के बीच होना चाहिए।)
      3. अभ्‍यर्थी का फोटोग्राफ (फोटोग्राफ का आकार 10-100 के.बी के बीच होना चाहिए।)
      4. अभिभावक तथा अभ्‍यर्थी द्वारा हस्‍ताक्षरित प्रमाण पत्र (हस्‍ताक्षरित प्रमाण पत्र का आकार 50-300 के.बी के बीच होना चाहिए।)

3. अधिक जानकारी के लिए कृपया विवरणिका देखें। Click Here

To analyse the given sample of salt for detection of one acidic and one basic radical

 Aim: - To analyse the given sample of salt for detection of one acidic and one basic radical

Observation table-

A) Detection of acidic  radical(anion)

S.N.	EXPERIMENT	OBSERVATION	INFERENCE
1	Salt solution + dil H2SO4	Colourless, colourless gas with brisk effervescence which turn lime water milky	Group A anion (CO32- may be present)
2.	Confirmative test : (a)  BaCl2 Test : Salt solution + BaCl2   (b)  MgSO4 Test : Salt solution + MgSO4	White ppt of BaCO3  White ppt of MgCO3	CO32-Confirmed CO32- Confirmed

 

B. Detection of basic radical(cation)

S.N.	EXPERIMENT	OBSERVATION	INFERENCE
1	Salt + NaOH solution + heat	Colourless gas with ammonical smell evolves	Zero group is present NH4+ may be present
2.	Confirmatory test of  NH4+ :- (a)  put glass rod dipped in conc. HCl acid on the mouth of test tube (b)  Salt + conc. NaOH + Nessler reagent + Warm	Dense white fumes generate around glass rod Brown solution	NH4+ Confirm  NH4+ Confirm

 

Result: in given sample of salt on acidic radical carbonate (CO32-) and one basic radical ammonium (NH4+) is present.

To analyse the given sample of salt for detection of one acidic and one basic radical

Aim: - To analyse the given sample of salt for detection of one acidic and one basic radical

Observation table-

A) Detection of acidic  radical(anion)

S.N.	EXPERIMENT	OBSERVATION	INFERENCE
1	Salt + Dil. H2SO4 and warm solution	Colourless gas with vinegar like smell evolves	Acetate (CH3COO-) may be present
2.	Confirmatory test for Acetate: (a)  Oxalic acid test: take 1 g of salt in test tube and add small amount of oxalic acid + one -two drops of distilled water   (b)  Ferric Chloride test: take 1 g of salt in test tube and add 1-2 ml distilled water , shake well and add 1-2 ml of neutral ferric chloride solution to it	Smell of vinegar obtained       Deep red color appears	Acetate (CH3COO-) is confirmed       Acetate (CH3COO-) is confirmed

 

Detection of basic radical(cation)

S.N.	EXPERIMENT	OBSERVATION	INFERENCE
1	Salt + NaOH solution + heat	No gas evolve	Zero group is absent
2.	Prepare original solution of salt by dissolving in 20 ml of water	Cleat solution is formed	Water soluble salt is present
3.	Small amount of OS + Dil. HCl solution	White precipitate is formed	Group -I is present Pb2+ may be present
4.	Confirmatory test of Pb2+: dissolve the precipitate in hot water and divide it into three parts (a)  part -1 + KI solution (b)  part-2 + potassium chromate   (c)  part-3 + few drops of alcohol + dil. H2SO4	Yellow precipitate  yellow precipitate is obtained which is soluble in NaOH  White precipitate is obtained which is soluble in ammonium acetate	Pb2+ is confirmed  Pb2+is confirmed   Pb2+ is confirmed

Result: in given sample of salt on acidic radical acetate (CH3COO^-) and one basic radical lead (Pb²⁺) is present. 

To analyse the given sample of salt for detection of one acidic and one basic radical

Aim: - To analyse the given sample of salt for detection of one acidic and one basic radical

Observation table-

A) Detection of acidic  radical(anion)

S.N.	EXPERIMENT	OBSERVATION	INFERENCE
1	Salt + Dil. H2SO4	No gas evolves	SO44-group is absent
2.	Salt + Con. H2SO4	Colourless gas with pungent smell evolves	Chloride (Cl-) may be present
3.	Confirmatory test for chloride: (a)  Salt + Dil. HNO3 + AgNO3 solution   (b)  Chromyl  chloride test:- ·      Salt + K2Cr2O7 + Conc. H2SO4 + warm   ·      Pass the vapours through NaOH solution ·      Add lead acetate and dil. Acetic acid to yellow solution
		White ppt soluble in	Chloride (Cl-) is
		ammonia solution	confirmed
		Red colour vapors evolves	Chloride (Cl-) may be
		Solution turns
		yellow	Chloride (Cl-) is
		Yellow precipitate is	confirmed
		formed

 

Detection of basic radical(cation)

S.N.	EXPERIMENT	OBSERVATION	INFERENCE
1	Salt + NaOH solution + heat	Colourless gas with ammonical smell evolves	Zero group is present NH4+ may be present
2.	Confirmatory test of  NH4+ :- (a)  put glass rod dipped in conc. HCl acid on the mouth of test tube (b)  Salt + conc. NaOH + Nessler reagent + Warm	Dense white fumes generate around glass rod Brown solution	NH4+ may be Confirmed  NH4+  is Confirmed

Result: in given sample of salt on acidic radical chloride (Cl^-) and one basic radical ammonium (NH4+) are present.