Recent questions tagged olympiad

Which of the following briefly describes the desert climate?

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Cellulose-rich food substances are good source of roughage in human beings because

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The swallowed food moves downwards in the alimentary canal because of

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Pitcher plant traps insects because it

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Which of the following is waste water?

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Which of the following has the strongest stem?

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Which among the following forest animals is the smallest?

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Almost 95% of compounds are of carbon because it can form

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Property due to which water acts as a universal solvent is

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Which of the following does not form an acidic salt?

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An element belongs to period 2 and group 2 the number of valence electrons in the atoms of this element is.

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Which of the following serve as green lungs?

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An aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that

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The isotope atoms differ in ?

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Natural rubber is a polymer derived from ?

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Sea and oceans are full of water on earth.However, a very small percentage of water present on earth is available for us. This percentage is roughly

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Which of the following is not a straight chain hydrocarbon?

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Which of the following does not show water shortage?

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On moving from left to right in a period in the periodic table, the size of the atom.

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The following reaction is an example of a $ 4H_3(g)+5O_2(g) \to 4NO+6H_2O$ a. Displacement reaction b. Combination reaction c. Redox reaction d. Neutralisation reaction

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Which of the following parts of a plant take part in sexual reproduction? i. Flower ii. Seed iii. Fruit iv. Branch Choose the correct answer from below.

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In a tall tree, which force is responsible for pulling water and minerals from the soil?

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What is a mixture of potassium nitrate powdered charcoal and sulphur called?

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Which of the following gases can be used for storage of fresh sampel of an oil for a long time?

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The muscular tube through which stored urine is passed out of the body is called -

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During the process of exhalation, the ribs move

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The isomeric pair is

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Availability of water and minerals in the soil for maximum absorption by roots is in the -

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Which of the following is formed when sodium hydroxide reacts with hydrochloric acid?

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KOH is used in making of

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Out of the given definitions, which is the most appropriate definition of climate?

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Given below from (i) to (iv) are some food items. (i) Boiled and mashed potato (ii) Glucose solution (iii) A slice of bread (iv) Mustard oil Which of the above will gie blue -black colour when tested with iodine?

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In the absence of which of the following will photosynthesis not occur in leaves?

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Which of the following is not required by plants for food synthesis?

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Which information is not conveyed by a balanced chemical equation?

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Loss of hydrogen halide from alkyl halide gives

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Which of the following gives the correct increasing order of the atomic radii of O, F and N?

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Which of the following is not a decomposition reaction

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Which of the following gases can be used for storage of fresh sampel of an oil for a long time?

asked Sep 12, 2017 by meena.p

1 answer

An element has an atomic number of 15 with which of the following elements will it show similar chemical properties.

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Reaction between X and Y, forms compound Z. X loses electron and Y gains electron. Which of the following properties is not shown by Z?

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Water in swimming pools is purified by adding

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What is a mixture of potassium nitrate powdered charcoal and sulphur called?

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The Ph of a solution of HCL is 4. This shows that the molarity of the solution is

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Soaps are formed by saponification of

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Graphite differs from Diamond because graphite is:

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Mineral acids are stronger acids than carboxylic acids because i. mineral acids are completely ionized ii. carboxylic acids are completely ionized iii. mineral acids are partially ionized iv. carboxylic acids are partially ionized

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Element X forms a chloride with the formula XCl2 , which is a solid with a high melting point . x would most likely be in the same group of the periodic table as

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Naturally occurring metallic compounds are called

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What is the Name of Scientist, who stated that matter can be converted into energy

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