Recent questions tagged cbsc

The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is

asked Aug 14, 2017 by meena.p

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Look at the flower below.

asked Aug 12, 2017 by priyanka.c

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Identify the odd one out of following figures

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Sathish has 4 plates of ladoos. He wants to distribute the ladoos equally among the four plates. What is the total number of ladoos in each plate?

asked Aug 12, 2017 by priyanka.c

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Neetu has 76 Rs. What will be the remaining money left with her if she buys the following items. 2 ice creams, 1 ball and 3 bar chocolates

asked Aug 12, 2017 by priyanka.c

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You are given some with following length

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Priya has a container of orange juice below

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Figure out the missing number

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What figure will come next?

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How many squares are there in the picture below?

asked Aug 11, 2017 by priyanka.c

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Harish wrote the number sentence below :

asked Aug 11, 2017 by priyanka.c

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Which symbol belongs in the circle to make a true number sentence

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asked Aug 11, 2017 by priyanka.c

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The average salinity of sea water is

asked Aug 11, 2017 by meena.p

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In an atomic explosion, enormous energy is released which is due to

asked Aug 11, 2017 by meena.p

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Which of the following is a protein?

asked Aug 11, 2017 by meena.p

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The solution which do not change the colour of either red/blue litmus are known as

asked Aug 11, 2017 by meena.p

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If 1g of hydrogen is mixed with 8 g of oxygen they water produced will be

asked Aug 11, 2017 by meena.p

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A gas which is used as cooling agent is

asked Aug 11, 2017 by meena.p

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Non stick cooking utensils are coated with

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The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of

asked Aug 11, 2017 by meena.p

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When an iron nail gets rusted, iron oxide is formed

asked Aug 11, 2017 by meena.p

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What do the letters pH stand for?

asked Aug 11, 2017 by meena.p

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Petroleum, gasoline, kerosene, diesel, paraffin wax are yielded on fractional distillation of

asked Aug 11, 2017 by meena.p

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Name the chemical used to test the presence of $CO_2$ in exhaled air.

asked Aug 11, 2017 by meena.p

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Washing soda is the common name for

asked Aug 11, 2017 by meena.p

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In the manufacture of safety matches, which of the following materials are used to coat the two sides of match boxes? 1. Yellow phosphorus 2. Glue 3. Glass powder 4. Red phosphorus

asked Aug 11, 2017 by meena.p

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A solute disappears when it is added to a

asked Aug 11, 2017 by meena.p

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Medicinal drugs are bitter in taste hence they are added with

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A chemical change could best be demonstrated by

asked Aug 11, 2017 by meena.p

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Water is neither acidic nor alkaline because

asked Aug 11, 2017 by meena.p

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To desalinate water technique used is

asked Aug 11, 2017 by meena.p

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Which of the following is a non metal that remains liquid at room temperature?

asked Aug 11, 2017 by meena.p

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The hardest substance available on earth is

asked Aug 11, 2017 by meena.p

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The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is

asked Aug 11, 2017 by meena.p

0 answers

Which is the first thing that would happen if a plant could NOT obtain carbon dioxide?

asked Aug 11, 2017 by meena.p

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Low densities, low melting and boiling point and poor conductivity is found in

asked Aug 11, 2017 by meena.p

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In a comparison with a gold atom and hydrogen atom, gold atom is

asked Aug 11, 2017 by meena.p

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Which of the following causes the rusting of iron? a)Oxidation b)Reduction c)Chemical reaction with oxygen d)Chemical reaction with CO

asked Aug 11, 2017 by meena.p

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What are the most common elements in the human body?

asked Aug 11, 2017 by meena.p

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Which of the following is not produced if you mix vinegar (an acid) and sodium bicarbonate (an alkali, or base) together?

asked Aug 11, 2017 by meena.p

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Which of the following has the highest pH value?

asked Aug 10, 2017 by meena.p

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Which of the following is the newest element to be discovered and synthesised?

asked Aug 10, 2017 by meena.p

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Chemical change does not take place in case of?

asked Aug 10, 2017 by meena.p

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Which of the following statements is/are true? A. The process of oxidation leads to a gain of electrons. B. The process of oxidation leads to a Toss of electrons. C. The process of reduction leads to a gain of electrons. D. The process of reduction leads to a loss of electron

asked Aug 10, 2017 by meena.p

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What is the percentage of $CO_2$ in the exhaled air?

asked Aug 10, 2017 by meena.p

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Stainless steel pans are provided with copper bottom because

asked Aug 10, 2017 by meena.p

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Some acids react with many materials and burn skin if they come in contact they are

asked Aug 10, 2017 by meena.p

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Haphazard movement of particles suspended in a liquid or gas caused by bombardment of particles by molecules of medium is

asked Aug 10, 2017 by meena.p

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At room temperature, most elements are in which phase of matter?

asked Aug 10, 2017 by meena.p

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