Explanation

• hydrogen gas can not use as fuel
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• "AS " is best to keep the meaning of the original sentence
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• TWO REASONS WHY WE USE THE "AS" PREPOSITION IN THE ABOVE SENTENCE

• 1: We use as with a noun to refer to the role or purpose of a person or thing:
• Fuel is a noun 
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• 2: "AS" preposition is used in those sentences in which two things indicate the same meaning or use the same purpose
• For example 
• Hydrogen can also serve as fuel. 
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Explanation

• the whole was behind the resident.
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• 'behind' preposition is used at or to the back of someone or something:
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• Behind is best to keep the meaning of the original sentence
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• behind is a preposition of place so we use the "behind" preposition because they indicate the place
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• some Prepositions of place are  (in, on, at, next to, in front of, behind, under, etc.)
  

Explanation

List of Early Battles of Islam Including Ghazwat.

• Total no of ghazwat 27 (12 mentioned in Quran)

• Battle in which prophet not participated is known as Saria. (Total 53 or 56)

• First Ghazwa is Widdan or Abwa in 1 A.H

• 624 Battle of Badr/Furqan 2hij (17th Ramzan) Abu Jahl

                Muslim 14/313 Kufar 70/1000, fought for 3 times

                Hazrat Hamza was the first commander of Islamic Army

• 625 Battle of Uhad. 3hij (5th Shawal) Abu Sufwan

                Muslim 70/1000 kufar 3000     + Muslim women participated firstly

• 626 Battle of Rajih.4hij

• 627 Battle of Khandaq (Ahzab).5hij (Muslims 3000)

• 628, Treaty of Hudaibiya, 6hij

• 629 Conquest of Khyber. Preaching of Islam to various kings.7hij

• 630, Battle of Hunain, Conquest of Makkah. 8hij   20 Ramzan (10,000 Muslims)

                 Battle of Mutah (first non Arab War)

• 631, Battle of Tabuk. 9hij (30,000 Muslims) (Last Ghazwa)

                Hazrat Abu Bakr donated all his belongings

• 632, Hajjat-ul-Wida.10hij

• 680, Tragedy of Karballah (10th Muharram 61 A.H/ 680 A.D)

• First Sariya Ubaidah bin Haris was fought at Rabakh in 1 A.H.

• Last Sariya Hazrat Saad bin Abi Waqqas was fought at Syria in 11 A.H

• Sindh was conquered during the reign of Walid 1

Explanation

metropolitan میٹروپولیٹن

of or relating to a large city, its surrounding suburbs, and other neighboring communities: 

Explanation

India and USSR signed a treaty of “friendship and Cooperation” on the Occasion of the 1971 War

Explanation

Explanation

The paragraph consist of three parts ,which are:

Topic of sentence 

Supporting detail 

Concluding Sentence

Explanation

• knowledge means: علم

Explanation

•  pronunciation meaning تلفظ
  

Explanation

• Doctor: Nurse:: leader: Follower
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• Just as a nurse follows the doctor's instructions, so also a follower works as directed by the leader