For how long Pious-caliphate lasted?

(A) Eighteen years
(B) Twenty years
(C) Thirty years
(D) Five years

The answer is: (C) Thirty years
Caliphate means a person considered a politico-religious successor and a leader of the entire Muslim world. The Pious-caliphate lasted for thirty years.

What was the original name of Imam Bukhari?

(A) Saeed
(B) Ahatem
(C) Ismail
(D) Muhammad bin Ismail

Answer: (D) Muhammad bin Ismail
Muhammad bin Ismail commonly known as Imam Bukhari. He was a Persian Islamic scholar who was born in Bukhara. Imam Bukhari compiled the Hadith collection in book and named it Sahih-al- Bukhari.

The other name of Masjid-e- Quba is:

(A) Masjid Taqwa
(B) Masjid Bilal
(C) Masjid Nimra
(D) Masjid Ibrahim

Answer: (A) Masjid Taqwa
The other name of Masjid-e- Quba is Masjid Taqwa. Masjid-e- quba is very first Mosque of Islam founded by Hazrat Muhammad (PBUH).