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1 Which one of the following was the first mineral acid discovered?
Which one of the following was the first mineral acid discovered?
Which one of the following is the best example of desiccant?
Which one of the following statements regarding Bleaching powder and D.D.T. is correct?
Which one of the following is the correct sequence of change in colors when a turmeric stain on white clothes is scrubbed by soap and then washed with water?
Number of molecules of water of crystallization in copper sulfate, sodium carbonate, and Gypsum are
At nearly 70°C, sodium bicarbonate shows the property of gradually decomposing, which makes it usable in bakery products. The product of decomposition responsible for this use of sodium bicarbonate is
A lens has a power of +2.0 Dioptre. Which one of the following statements about the lens is true?
The Sun appears reddish during sunrise and sunset. The phenomenon in optics which is responsible for this appearance of the Sun is
Which one of the following is the largest composition in biogas?
The instrument used for detecting the presence of electric current in a circuit is
Which one of the following types of radiations has the smallest wavelength?
Which one of the following is NOT a component of the human male reproductive system?
When the short circuit condition occurs, the current in the Circuit
Which one of the following statements about sound is NOT correct?
Consider the following image: A proton enters a magnetic field at right angles to it, as shown above. The direction of force acting on the proton will be