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The phases of the moon as we see from the Earth are due to changing relative positions of the sun, the earth and the moon. Which of the following statements is true. A. on a full moon day, the earth comes between the sun and the moon B. on a new moon day, the moon is in between the earth and the sun C. on a full moon day, the moon is in between the earth and the sun D. on a new moon day, the earth is between the sun and the moon? E. on a new moon day, the sun is between the moon and the earth
Metal 'A' displaces metal 'B' from its salt solution, but not able to displace metal 'C' from its salt solution. Metal 'B' displaces metal 'D' from its salt solution. Which of the following depicts correct order of reactivity of metals. 
Match the following  (a) a non-metal that exists in two forms (i) Chlorine (b) a non-metal which is liquid at room temperature   (ii) Zinc (c) a metal which is constituent of brass and bronze (iii) Carbon (d) a non-metal used for disinfecting water (iv) Bromine (e) a metal used in electroplating (v) Copper
Consider the figures of a metal ball and a metal ring given below.
The metal ball can just pass through the hole of a metal ring formed out of a strip. When the ball is heated it gets stuck. But when the metal is heated
Heat and Thermodynamics mcq question image
Which of the following is not an alkaline earth metal?
A sample of polystyrene is warmed under reflux in concentrated nitric acid and the clear mixture is poured in water to yield a X coloured precipitate. This precipitate is then extracted with ether and then with NaOH solution followed by washing with water in each extraction. The nitro compounds from the combined final aqueous extract and alkaline extract using concentrated HCl and zinc. The final solution after being diazotized and then cooled is poured into excess of alkaline naphthol to give Y coloured solution. What are the colours X and Y?
Which of the following is known as alkaline earth metal?
Which of the following is an example of an alkaline earth metal?
In this question, the first and last sentences of the passage are numbered 1 and 6. The rest of the passage is split into four parts and named P, Q, R, and S. These four parts are not given in their proper order. Read the sentence and find out which of the four combinations is correct. S1: A force exists between everybody in the universe. P: Normally it is very small but when one of the bodies is a planet, like earth, the force is considerable. Q: It has been investigated by many scientists including Galileo and Newton. R: Everything on or near the surface of the earth is attracted by the mass of the earth. S: This gravitational force depends on the mass of the bodies involved. S6: The greater the mass, the greater is the earth's force of attraction on it. We can call this force of attraction gravity. The Proper sequence should be:
Alkali metal and alkaline earth metals belong to: