The Sikh faith believes in equality.
The concept of praying together symbolizes a sense of gender equality, which Sikhism is highly in favour for.
If you mean pray with men together yes they're allowed but they are not to pray on the same line. the can either pray together on a different line or separate section. if you mean together women only without any men they are not allowed because they cant say the aqaama nor are women allowed to say the adhaan.
Both men and women can pray in the same mosque, but definitely not together, men should be in the front row and women stand behind them. Islam doest not allowed men and women to be in the same row while praying either in the mosque or at home. For further details check some of the Islamic sites.
Yes. Their religion is Hinduism.
all Sikh men have the last name: singh which means lion.
usually women on left and men on right
Well, its mostly men, but there are some women who wear it too.
Kaur is a middle name used by Sikh women as in Singh is for Sikh men.
Yes they can
In mosques or at their houses. there is a special women places in mosques for women, because it is forbidden to pray next to men. and it is not a must for women to pray the 5 prays at mosque, they can do that at home. for example Friday Prayer it is a must for men to pray it at mosque, on the contrary of women.
They pray separately in the synagogue.
If you mean to ask why men and women pray in different rooms, they don't have to; in many mosques, men and women pray in the same room. On the other hand, if you mean why do men and women pray in separate lines, it is to prevent people from getting distracted during prayer.
There is no such thing as a "SIKH necklace" that is mandated by the religion. Some men and women do wear a necklace with the Sikh insignia but it is not required by their faith.