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All vowels +1 & all consonants - 1 & also 1st letter interchanges with last, 2nd with 2nd last and so on.
Which of the following substances will turn red litmus paper blue?
Which of the following statement regarding Rutherford nuclear model is NOT correct?
Air coolers are more suitable for –
The efficiency of a Carnot engine depends on:
Marble is a metamorphic rock of:
_____ is used for making chemical apparatus like beakers, flasks, etc.
The force of attraction between the particles of matter is maximum in______.
What is the equilibrium distance for Hydrogen atoms?
Deficiency of which of the following elements is responsible for weakening of bones?
1. Calcium
2. Phosphorus
3. Nitrogen
...
What does a catalyst do in a reaction?