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NEET Practice Questions (MCQs) with Answers & Solutions

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Which statement is correct in the following.

A. Matter is existing as a individual single moleule B. A group of matter is called molecule C. a group of moleules is called matter D. combination of group of different moleules form the same type of matter

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Which of the following statements is false

A. Matter is made of small particles always exist in solid state B. matter of the same substance in liquid state has more volume compared to its solid state C. matter is solid state possess fixed volume with definite shape D. Beyond solid, liquid and gaseous state, two other physical states are also known as plasma and Bose Einistein condensate

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The density of neon will be maximum at (IIT 1990)

A. NTP B. $ 0 ^\circ C , 2 atm $ C. $ 273 ^\circ C , 1 atm $ D. $ 273 ^\circ C , 2 atm $

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Pressure of a mixture of 4 g of $O_2 and 2g of H_2 $ combined in a bulb o f 1 litre at O0C is (AllMs - 2000)

A. 25.215 atm B. 31.205 C. 45.215 atm D. 15.210 atm

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The temperature at which real gases obeys the ideal gas laws over a wide range of pressure in called

A. critical temperature B. proyles temperature C. Inversion temperature D. Reduced temperature

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A bottle of $NH_3$ and a square of dry HCL connected through a long tube are opened simultanuulely at both ends, the white ammonia chloride ring first fromed willbe (IIT- 1988)

A. At the centre of tuloe B. near the hydrogen chloride bottle C. near the $ NH_3 $ bottle D. through out the length of the tube

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At $ 100 ^\circ C $ and 1 atm, if the density of liquid water is $ 1.0 g ^{-3} $ an and that of water vapour is $ 0.006g cm^{-3} $ , then the volume of water moleules in 1 L of steam at this temperature is (IIT- 2000)

A. $ 6 cm ^ 3 $ B. $ 60 cm ^ 3 $ C. $ 0.6 cm ^3 $ D. $ 0.06 cm ^ 3 $

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Two separate bulbs contains gas A and gas B the density of A is twice as that of gas B. The molecular. mass of gas A is half as that of B If two gases are at same temp, the ratio of the pressure of A to that of B is

1/2

1/4

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50 ml of a gas A diffuse through a membrane in the same time as for this diffiusion of 40 mlof a gas B under identical pressure temperature conditions . If the molecular weight of A = 64, that of B would be (CBSC - 1992)

100

250

200

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Explanation

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Which of the following statement is false ? (BHD - 1994)

The product of volume pressure of fixed amound of a gas is independent of temperateure

Molecules of differant gases have the same K.E. at a given temperature

The gas equation is not valid at high pressure and low temperature

The gas costant per moleule is known as Boltzmann Constant

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Explanation

According to boyel's law

P=1/V where T is constant.

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