अशुद्ध वाक्य का चयन कीजिए -

निम्नलिखित में से अशुद्ध शब्द का चयन कीजिए:

UNICEF दिवस 2022 की थीम क्या है ?

न्यूटन की गति का प्रथम नियम क्या कहलाता है ?

Replace the underlined part of the sentence with one word from the options given below:
 John is a person who collects stamps.

Which one of the following is the correct meaning of -
 The study of human behaviour and societies:

Which one of the following is the correct meaning of -
 Killing of self -

Which one of the following is the correct meaning of -
 That which cannot be heard.