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In AB_(4)L_(x), Molecule is non polar then value of x is : L = Lone pair, A, B = Type of atom

In a zero order reactionn 47.5% of the reactant remains at the end of 2.5 hours. The amount of reactant consumed in one hour is

In A^(=)B^(-) ionic compound radii of A^(=) and B^(-) ions are 180 pmand 187 pm respectively .The crystal structure of this compound will be

In a zero order reaction, for every 10^(@) rise of temperaure, reaction rate is doubled. If the temperature 10^(@)C to 100^(@)C, the reaction rate will become:

In a zero order reaction, the time taken to reduce the concentration of reactant from 50% to 25% is 30 minutes. What is the time required to reduce the concentration from 25% to 12.5%?

In a zero order reaction, A toProducts, starting with 0.5 mol L^(-1), if 0.4 mol L^(-1) are present after 10 min., the rate constant of the reaction will be

In a zero-order reaction for every 10^(@) rise of temperature, the rate is doubled. If the temperature is increased from 10^(@)C to 100^(@)C . The rate of the reaction will become

In which of these processes platinum is used as a catalyst ?

In a voltaic cell, ar 298K if activity of both electrolyte is unify then according to Nernst'sequation

In a vessel containing SO_3, SO_2 and O_2 at equilibrium,some helium gas is introduced os that the total pressure increases while temperature and volume remain constant. According to Le chatelier's principle the dissociation of SO_3 :

In a vessel containing SO_(3),SO_(2)and O_(2) at equlibrium, some helium gas is introduced so that the total pressure increases while temperature and volume remain constnat. According to Le-Chatelier principle the dossociation of SO_(3)

In a vessel containing SO_(3) , SO_(2) and O_(2) at equilibrium , some He gas is introduced so that total pressure increases while temperature and volume remain constant . According to Le Chatelier's principle , the dissociation of SO_3 :

In a vessel 2 g of O_2 2g Of H_2 and 2 g of N_2 are present. Which has the largest no of atoms?

In a transition series, with the increase in atomic number, the paramagnetism

In a transition series, as the atomic number increase paramagnetism:

In a tetrahedral crystal field, the d-orbitals split into …… orbitals collectively called …… and …… orbitals collectively called ….. .

In a test-tube, there is 18 g of glucose (C_(6)H_(12)O_(6)) 0.08 mole of glucose is taken out. Glucose left in the test tube is

In a tetragonal unit cell:

In a Tetragonal unit cell :

In a system A(s) hArr 2B(g) +3C (g) if the conc. Of C at equilibrium is increased by a factor of 2, it will cause the equilibrium concentration of B to change to

In a system A(s) hArr 2B (g) +3C(g) if the conc. Of C at equilibrium is increased by a factor of , it will cause the equilbrium concentration of B to change to

In a system : A(s) hArr 2B(g) + 3C(g) If the concentration of C at equillibrium is increased by factor 2 then predict the equillibrium concentration of B in terms of original val,ue .

In a successive radioactive disintegration underset(N_(1))(A)overset(lamda_(1))tounderset(N_(2))(B)overset(lamda_(2))toC …. No. of nuclides after time t. in which the parent has a longer but not much longer half-life than the daughter. Which of the following expressions is correct?

In a study of the reaction 2A + 2BhArr3C + D, A and B are mixed in a vessel at t^(@)C. The initial conc. of A is twice the initial conc. of B. After equilibrium is reached, the conc of C is three times the conc. of B. Calculate the equilibrium constant K_(C) in terms of P/Q and report P + Q.

In a system A(g) rarr 4B (g) + 3C(g) If the conc. of C at equilibrium is increased by a factor of 2, it will cause the equilibrium concentration of B to change to

In a study of equilibrium: H_(2)(g) + I_(2)(g)

In a standard hydrogen electrode, the pressure of hydrogen gas and H^(+)concentration respectively are

In a standard hydrogen electrode , the concentration of H^(+) is :

In a square planar complex of the type [Mabex], the number of geometrical isomers can be :

In a spontaneouse process, the system suffers

In a spontaneouse irreversible process, the total entropy of the system and surroundings:

In a spontaneous process, the entropy of the system and its surroundings

In a solution of the miscible volatile liquids A and B, the plots of their partical V.P. V_(s) their mole fractions is given by (Assume, V.P. of pure Agt V.P. of pure B)

In a solution of acid H^(+) concentration is 10^(-10)M. The pH of this solution will be

In a solution of pH = 5, more acid is added in order to reduce the pH = 2. The increase in hydrogen ion concentration is

In a solution of acetic acid, sodium acetate is added, then its pH value

In a solution of 7.8 g benzene (C_6H_6) and 46.0 g toluene (C_6H_5CH_3) the mole fraction of benzene is:

In a solution of 7.8 gm benzene C_(6)H_(6) and 46.0 gm toluene (C_(6)H_(5)CH_(3)), the mole fraction of benzene in this solution is

In a solution of 7.8 g benzene (C_(6)H_(6)) and 46.0 g toluene (C_(6)H_(5)CH_(3)) the mole fraction of benzene is :

In a solution if the amount of solvent is doubled, keeping the amount of solutes same, the share of solute in the solution

In a solution containing 1 mol of ethyl alcohol and 4 mol of water, the mole fraction of water is :

In a solution , 0.02 M acetic acid is 4% dissociation . The [OH^(-)] in the solution is

In a solid, oxide ions are arranged in CCP. Cations A occupy one-sixth of the tetrahedral voids and cations B occupy one-third of the octahedral voids. The formula of the compound is -

In a solid lattice the cation has left a lattice site and is located at an interstitial position. The lattice defect is known as -

In a solid lattice the cation has left a lattice site and is located at an interstitial position, the lattice defect is

In a solid, atom M occupies ccp lattice and (1/3)^(rd) of tetrahedral voids are occupied by atom N. The formula of compound is .........

In a solid lattice the cation and anion both have left a lattive site. The lattice defect is known as

In a solid atom M occupies ccp lattice and ((1)/(3)) of tetrahedral voids = 2n Given that ((1)/(3))rd of tetrahedral voids are occupied i.e., ((1)/(3))xx2n are occupied by6 N atoms therefore M:NrArr n:((2)/(3)) 1:((2)/(3))3:2 rArr M_(3)N_(2)