In Islamic law, najis (Arabic: نجس) means ritually unclean. According to Islam, there are two kinds of najis: the essential najis which cannot be cleaned and the unessential najis which become najis while in contact with another najis.Contact with najis things brings a Muslim into a state of ritual impurity (Arabic: نجاسة najāsa, in opposition to ṭahārah, ritual purity). Ritual purification is then required before religious duties such as regular prayers are performed.
If you have no concrete evidence that an item has really and definitely become Najis, you can consider it Taahir as well as all items which touched it. Precaution is good good but it is not obligatory.
Not in most cases. Wiping would not suffice when purifying, and "washing" must be done, even if it is a very small amount of water, as long as it is "washed".
There are certain laws related to using something other than water when doing istinja` from extretement of faeces. The details of this you must read in the book of laws of your Marja' taqleed.
However, in general washing must be done.
And Allah knows best.
Doubting whether the Najasat has transferred to your body or cloth or not, does not make your body or cloth Najis. You can consider everything as Tahir unless and until you know for sure that it is Najis.
'If you are sure that you performed a Prayer while your body or cloth were Najis, then you need to be Tahir and perform that Prayer again.
No, that item touched by a person who had touched a corpse and did not perform Ghusl yet, will not become Najis (impure).
If you are 100% sure that the chocolate packet touched a part of the floor that definitely became najjs, and that the chocolate packet had moisture on it, then yes it would be najis. This would easy to purify as you could merely put the packet under a tap or just remove the chocolates. If however the floor was dry and so was the packet, then it isn't najis.
May Allah grant you success
No. Everything is Tahir for you until you know for sure that it is Najis. As you are not sure that the ground is Najis, you can consider it as Tahir.
Yes, we are allowed to touch any part of our body even if it is impure, but if our hand or the impure part was wet, then our hand becomes impure also and needs to be washed with water to be pure again before performing Prayers.
Touching any Najis item including dogs or its urine etc does need Ghusl at all. You need to wash the part which touched the Najis item with water, then perform Wudhu and pray. It is a sinful act to delay performing the Prayer till it's time goes. Performing the Qadha namaz will not omit the sin of not praying within the time of the prayer.
You must perform your Namaz within its time under any circumstance.
Taharah is a real condition شرط واقعي in Prayers and fasting. Any worship which requires Purity (Taharah) is invalid if it was done with out purity.
If you could not learn basic rules of Ghusl and never been informed that Ghusl is obligatory in certain cases, which is very rare now a days, then the rule is different. But if you knew about Ghusl and it becomes obligatory in certain situations, and you did not know that it applies on you, and you fasted with out Ghusl, then you need to perform the obligatory Ghusl then perform every worship which was performed with out Ghusl.
You can read the verdict of Ayatullah Sustani as follows:
Ruling 1593. If a junub in the month of Ramadan forgets to perform ghusl and remembers after one day, he must keep a qaḍāʾ fast for that day; and if he remembers after a few days, he must keep a qaḍāʾ fast for all the days that he is certain to have been junub on. For example, if he does not know whether he was junub for three or four days, he must keep qaḍāʾ fasts for three days.
If you did not know, and you did not have the ability to educate yourself about these things, then your fasting is valid. Otherwise, you will need to do qadha.
ِAnd Allah knows best
Allah, The Glorious says in Quran (9:28) : إنّما المشركون نَجَس INNAMA ALMUSHRIKOON NAJAS. Verily the polytheists are impure. This a Quranic fact which all Muslims should follow.
Those who participate in Muharram believe and love Imam Husain (AS) being a divine leader of Truth, which means that they are not really polytheists even if their families are been classified as non Muslims. Their noble act in commemorating Imam Husain (AS)'s martyrdom reflects their undeclared faith in his values.
Allah Knows what is in the hearts and the acts usually reflect what is in the heart. That is why we take the acts who love Imam Hussain (AS) as an indication of their faith in him and his faith which is Tawheed.
Any Salah which was not performed with proper Ghusl must be made up again. If you are not sure how many prayers were invalid, you can estimate.