Which of the following shows highest ox. no. in combined state?

1. Os

2. Ru

3. Xe

4. All of these

निम्नलिखित में से कौन संयुक्त अवस्था में सबसे अधिक ऑक्सीकरण संख्या दिखाता है?

(1) Os

(2) Ru

(3) Xe

(4) ये सभी

 64%
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints

In the reaction,

NaH+ H2NaOH + H2:

1. H- is oxidised

2. Nais reduced

3. both NaH and H2O are reduced 

4. none of the above

अभिक्रिया में,

NaH+ H2NaOH + H2:

(1) Hऑक्सीकृत होता है

(2) Na+ अपचयित होता है

(3) NaH और H2O दोनों होते हैं 

(4) उपरोक्त में से कोई नहीं

 55%
From NCERT
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints

The oxidation number of sulphur in S8, S2F2 and H2S respectively are :

1. 0, +1 and -2

2. +2, +1 and -2

3. 0, +1 and +2

4. -2. +1 and -2

S8, S2F2 और H2S में ऑक्सीकरण संख्या क्रमशः हैं:

1. 0, +1 और -2

2. +2, +1 और -2

3. +1 और +2

4. -2, +1 और -2

 62%
From NCERT
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints

advertisementadvertisement

In the conversion Br2BrO3, the oxidation state of bromine changes from 

(1) – 1 to – 1

(2) 0 to – 1

(3) 0 to + 5

(4) 0 to – 5

Br2BrO3 रूपांतरण में, ब्रोमीन की ऑक्सीकरण अवस्था में कहाँ से कहाँ तक परिवर्तन होता है- 

(1) – 1 से –1

(2) 0 से –1

(3) 0 से +5

(4) 0 से – 5

 85%
From NCERT
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints

The oxidation state of nitrogen in N3H is.

(1) +13

(2) + 3

(3) –1

(4) 13

N3H में नाइट्रोजन की ऑक्सीकरण अवस्था है-  [NCERT 1977, 81]

(1) +13

(2) + 3

(3) –1

(4) 13

 66%
From NCERT
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints

Oxidation number of P in Mg2P2O7 is 

(1) + 3

(2) + 2

(3) + 5

(4) – 3

Mg2P2O7 में P की ऑक्सीकरण संख्या है-               

(1) + 3

(2) + 2

(3) + 5

(4) – 3

 76%
From NCERT
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints

advertisementadvertisement

Mg(OH)2 + HCl Mg(OH)Cl + H2O2, the equivalent weight of Mg(OH)2 will be (M= Mol. wt. of Mg(OH)2)

1. zero

2. M

3. M/2

4. M/4

Mg(OH)2 + HCl Mg (OH)Cl + H2O2, Mg(OH)2 का तुल्यांकी भार होगा? (M =  Mg(OH)का मोलर द्रव्यमान)

1. शून्य 

2. M

3. M/2

4. M/4

To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints

In the aluminothermic process, aluminium acts as:

1. an oxidising agent

2. a flux

3. a reducing agent

4. a solder

ऐलुमिनोतापी प्रक्रम में, ऐलुमिनियम निम्नानुसार कार्य करता है:

(1) एक ऑक्सीकारक 

(2) एक गालक 

(3) एक अपचायक 

(4) एक टाँका

To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints

The oxidation state of Ni in Ni(CO)4 is:

1. zero

2. +4

3. +8 

4. +2

Ni(CO)4 में Ni की ऑक्सीकरण अवस्था है:

(1) शून्य 

(2) +4

(3) +8 

(4) +2

 86%
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints

advertisementadvertisement

Oxidation state of +1 for phosphorus is found in:

1. H3PO3 

2. H3PO4

3. H3PO2

4. H4P2O7

फास्फोरस के लिए +1 ऑक्सीकरण अवस्था किसमें पायी जाती है:

(1) H3PO3 

(2) H3PO4

(3) H3PO2

(4) H4P2O7

 66%
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints