Of the following elements which has the largest atomic radius? w) Ba x) F y) C z) Be

Of the following elements which has the largest atomic radius? w) Ba x) F y) C z) Be
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ANSWER: W -- Ba
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Which of the following elements has the highest first ionization energy? w) Helium x) Neon y) Fluorine z) Argon

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The molar volume of which two elements is the same at standard temperature and pressure? w) fluorine and bromine x) fluorine and iodine y) fluorine and chlorine z) bromine and iodine

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Which of the following chemists was the first to use letters as symbols for elements? w) Ernest Oliver Lawrence x) Louis Andrew Proust y) Jons Jacob Berzelius z) none of these

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Teflon is produced by polymerizing ethylene which hydrogen substituted with one of the following elements: w) teflinium x) tin y) fluorine z) carbon

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The elements that have an outer electron configuration ns2 (read: n - s - 2) are called: w) halogens x) transition metals y) alkaline earths z) noble gases

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The lanthanide series elements are also known as: w) rare earth elements x) non-metals y) fifth period elements z) sixth period elements

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Which of the following elements forms a tetrahedra structure? w) carbon x) beryllium y) boron z) fluorine

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Which of the following elements can form the great number of covalent bonds? w) carbon x) nitrogen y) oxygen z) sulfur

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Which of the following elements would form an acid oxide with the formula XO2 and an acidic compound with hydrogen with the formula XH2? w) Sodium x) Magnesium y) Aluminum z) Sulfur

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The elements in group 1A of the periodic table are called: w) halogens x) alkaline earths y) alkali metals z) rare earths

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Name the person who developed a table of elements which revealed regularities in elemental properties in 1869? w) Theodore Richards x) Antoine Lavoisier y) Dmitri Mendeleev z) Svante Arrhenius

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Which of the following scientists was awarded the Nobel Prize in 1911 for the discovery of the radioactive elements, radium and polonium? w) John Dalton x) Dmitri Mendeleev y) Emil Fischer z) Marie Curie

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In the periodic table of elements, on moving from left to right across a period, the atomic radius – (1) decreases (2) increases (3) remains unchanged (4) does not follow a definite pattern

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In the periodic table of elements, on moving from left to right across a period, the atomic radius (1) decreases (2) increases (3) remains unchanged (4) does not follow a definite pattern

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Last Answer : increases

Which one of the following statements in not correct? [CDS 2003] (a) India is the highest oil-seeds and vegetable oil producing country in the world (b) India is the second largest exporter of jute goods in the world In d ian Ag r ic u l t u r ea n d An i ma l H u s ba n d r y (c) India is the largest producer of silk in world (d) India is the second largest producer of three-wheeler motor vehicles in the world

Description : Which one of the following statements in not correct? [CDS 2003] (a) India is the highest oil-seeds and vegetable oil producing country in the world (b) India is the second largest exporter of ... silk in world (d) India is the second largest producer of three-wheeler motor vehicles in the world

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