What is the oxidation number of sulphur in Na2S4O6

(1) 23

(2) 32

(3) 35

(4) 52

Na2S4O6 में सल्फर की ऑक्सीकरण संख्या क्या है?

(1) 23

(2) 32

(3) 35

(4) 52

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If 1.2 g of metal displace 1.12 litre hydrogen at normal temperature and pressure, equivalent weight of metal would be 

(1) 24

(2) 12

(3) 1.2 ÷ 11.2

(4) 1.2 × 11.2

यदि सामान्य ताप और दाब पर 1.2 g धातु 1.12 लीटर हाइड्रोजन का विस्थापन करती है, धातु का तुल्यांकी भार होगा?                                              

(1) 24

(2) 12

(3) 1.2 ÷ 11.2

(4) 1.2 × 11.2

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In a balanced equation H2SO4+xHIH2S+yI2+zH2O, the values of x, y, z are ,

(1) x = 3, y = 5, z = 2

(2) x = 4, y = 8, z = 5

(3) x = 8, y = 4, z = 4

(4) x = 5, y = 3, z = 4

एक संतुलित समीकरण H2SO4+xHIH2S+yI2+zH2O में, x, y, z के मान हैं- 

(1) x = 3, y = 5, z = 2

(2) x = 4, y = 8, z = 5

(3) x = 8, y = 4, z = 4

(4) x = 5, y = 3, z = 4

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When KMnO4 acts as an oxidising agent and ultimately forms [MnO4]2,  MnO2,   Mn2O3,  Mn+2 then the number of electrons transferred in each case respectively is (1) 4, 3, 1, 5

(2) 1, 5, 3, 7

(3) 1, 3, 4, 5

(4) 3, 5, 7, 1

जब KMnO4 ऑक्सीकारक के रूप में कार्य करता है और अंततः [MnO4]2,  MnO2,   Mn2O3,  Mn+2 बनाता है तब क्रमशः प्रत्येक मामले में स्थानांतरित इलेक्ट्रॉनों की संख्या है:             [AIEEE 2002]

(1) 4, 3, 1, 5

(2) 1, 5, 3, 7

(3) 1, 3, 4, 5

(4) 3, 5, 7, 1

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In the reaction Na2S2O3 + 4Cl2 + 5H2O → Na2SO4 + H2SO4 + 8HCI the equivalent weight of Na2S2O3 will be

1. M/4

2. M/8

3. M/1

4. M/2

(M= molecular weight of Na2S2O3)

अभिक्रिया Na2S2O3 + 4Cl2 + 5H2O → Na2SO4 + H2SO4+ 8HCl में Na2S2O3 का तुल्यांकी भार होगा-

1. M/4

2. M/8

3. M/1

4. M/2

(M = Na2S2O3 का अणुभार )

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When Cl2 is converted into Cl- & ClO3- then n-factor of Clwill be:

1. 3/5

2. 5/3

3. 7/2

4. 2

जब Cl2, Cl- और ClO3- में परिवर्तित हो जाता है तब Cl2 का n-गुणक होगा:

1. 3/5

2. 5/3

3. 7/2

4. 2

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In the reaction

Al + Fe3O4 Al2O3 + Fe

total number of electrons transferred during reaction are:-

1. 6

2. 8

3. 8/3

4. 24

अभिक्रिया में

Al + Fe3O4 Al2O3 + Fe

अभिक्रिया के दौरान स्थानांतरित किए गए इलेक्ट्रॉनों की कुल संख्या हैं:-

1. 6

2. 8

3. 8/3

4. 24

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The equivalent mass of H3PO4 in the following reaction is,

H3PO+ Ca(OH)2 CaHPO4 + 2H2O

1. 98

2. 49

3. 32.66

4. 40

निम्नलिखित अभिक्रिया में H3PO4 का तुल्यांक द्रव्यमान है,

H3PO+ Ca(OH)2 CaHPO4 + 2H2O

(1) 98

(2) 49

(3) 32.66

(4) 40

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In which of the following processes nitrogen is oxidised?

1. NH4+ N2

2. NO3-NO

3. NO2 NO2-

4. NO3-NH4+ 

निम्नलिखित में से किस प्रक्रिया में नाइट्रोजन ऑक्सीकृत होता है?

1. NH4+ N2

2. NO3-NO

3. NO2 NO2-

4. NO3-NH4+ 

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In the preparation of chlorine from HCl; MnO2 acts as:

1. reducing agent

2. oxidising agent

3. catalytic agent

4. dehydrating agent

HCl से क्लोरीन के निर्माण में; MnO2 किस प्रकार कार्य करता है:

1. अपचायक 

2. ऑक्सीकारक 

3. उत्प्रेरकीय कर्मक 

4. निर्जलीकारक 

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