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Tests
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- The measured mass and volume of a body are 22.42 gm and respectively, with possible errors 0.01 gm and . The maximum error in density is about
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- 12 L of and 11.2 L of are mixed and exploded. The composition volume of mixture is
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- If then the solution of the set for x is
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- If and , then the value of is
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- In an aqueous solution of volume 500 ml, when the reaction of reached equilibrium, the was x M. When 500 ml of water is further added, at the equilibrium will be
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- The bob of a simple pendulum is pulled to a position in xz plane and is given a velocity , such that it whirls to rise upto the level of suspension. The value of will be:
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- For reaction , 80% A is decomposed in 1 hr. 96% is decomposed in 2 hrs. 99.2% is decomposed in 3 hrs. and 99.84% is decomposed in 4 hrs. What is the order of reaction?
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- The radius of the Polonium 210 nucleus may be taken as 8.3 fm. What is the radius of the iron –56 nucleus ?
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- Action of hot and conc. on metallic tin produces:
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- The first ionization energy for following metals will be in the order
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- When the sodium salt of an organic acid is strongly heated, it yields sodium carbonate. If the weight ratio of the sodium salt to sodium carbonate obtained is 5 : 4, what is the...
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- On gold surface, the rate of decomposition of HI is independent of the pressures of HI but on Pt surface, the rate is proportional to concentration of HI. It is concluded that
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- An organic compound contains about 52% carbon. It could be which one or ones of the following
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- What is the commercial names of trichloroethene -
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- x, y and z in the following processes are -(1) (2) (3)
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- (A) (B) The above reactions indicate that -
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- What is the pH of the mixture 100 ml | NHCl + 60 ml | NaOH
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- Three isotopes of an element have mass numbers M, ( M + 1) and ( M +2). If mean mass number is ( M+0.5 ) then which of the following ratio may be accepted for M, ( M +1), (M +2)...
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- The oxide of a metal contains 60 % of the metal. What will be the percentage of bromine in the bromide of the metal. If the valencey of the metal is the same in both the oxide a...
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- Rutherford’s alpha partcle scattering experiment eventually led to the conclusion that:
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- The Compound which gives off oxygen on moderate heating is :
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- AB is a vertical pole with B at the ground level and A at the top. A man finds that the angle of elevation of the point A from a certain point C on the ground is 60°. He mov...
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- In a geometric progression consisting of positive terms, each term equals the sum of the next two terms. Then the common ratio of this progression equals
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- SECTION – IQ. No. 24 :Consider the two curves Then
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- Let a, b, c be such that If then the value of n is
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- If the width of slit S in Young’s double slit experiment is gradually increased:
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- Three dice are thrown simultaneously. The probability of obtaining a sum of 6 is
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- Find the altitude of cylinder of maximum volume that can be inscribed in a given sphere. [Take radius of sphere = R units]
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- The pressure at the bottom of a tank of liquid is not proportional to
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- Reduction is defined as :
