Who invented the thermos flask?
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Who discovered the colour photography?
Who Invented Neon Lamp?
The Agra fort was built by ___________.
Gandhiji's 'Satyagraha' meant an attachment to the following two elements
In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.
An unintended consequence of an event or action, especially an unwelcome one.
Which of the following is the uppermost layer of the atmosphere?
Ornithophily is effected by