Raashi asked Ratul what challenges he had faced while volunteering.
Explanation: The question is converted into reported speech. The verb have faced in the direct speech changes to had faced in the past perfect tense to reflect the shift in time.
शहनाई की जादुई आवाज का असर हमारे सिर चढ़कर बोलने लगता है । (मिश्र वाक्य में बदलिए)