Description : Aqueous solution of how many of the following species turn blue limtus red ? (i) `SF_(4)` (ii) `PCl_(3)` (iii) `H_(2)O` (iv) `NO_(2)Cl` (v) `SF_(6)` (
Last Answer : Aqueous solution of how many of the following species turn blue limtus red ? (i) `SF_(4)` (ii) `PCl_(3)` ( ... )` (xii) `COCl_(2)` (viii) `C Cl_(4)`
Description : The deficiencies of micronutrients, not only affect growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both ... , Mo (b) Ca, K, Na (c) Mn, Co, Ca (d) Cu, Mn, Fe
Last Answer : d) Cu, Mn, Fe
Description : The following compounds are heated (i) `KNO_(3)` (ii) `Cu(NO_(3))_(2)` (iii) `Pb(NO_(3))_(2)` (iv) `NH_(4)NO_(3)` . Which of the following statement/s
Last Answer : The following compounds are heated (i) `KNO_(3)` (ii) `Cu(NO_(3))_(2)` (iii) `Pb(NO_(3)) ... and (iii) liberate `O_(2)` D. All statements are correct
Description : Statement - 1 : `PbSiF_(6) + H_(2) SiF_(6)` + gelatine is taken as electrolyte in electrolytic refining of lead . Statement -2 : Discharge potential o
Last Answer : Statement - 1 : `PbSiF_(6) + H_(2) SiF_(6)` + gelatine is taken as electrolyte in electrolytic ... Statement-1 : is false , statement-2 : is true
Description : Match the items given in column I with those in column II and select the correct option given below. Column I Column II A. Herbarium (i) It is a place having a collection of preserved plants and animals. B. Key (ii) A list that ... ii) (i) (iv) (c) (ii) (iv) (iii) (i) (d) (iii) (iv) (i) (ii)
Last Answer : (d) (iii) (iv) (i) (ii)
Description : `Mf + XeF_(4) rarr M^(+) A^(-) (M^(+)-` alkali metal cation) The state of hybridisation of the central atom in A and sphere of the species are:
Last Answer : `Mf + XeF_(4) rarr M^(+) A^(-) (M^(+)-` alkali metal cation) The state of hybridisation of ... )d^(3)`, pentagonal planar D. no compound formed at all
Description : Aromatic carbonyl compound having molecular formula `C_(8)H_(8)O` react with `NH_(2)OH` how many oximes can be formed
Last Answer : Aromatic carbonyl compound having molecular formula `C_(8)H_(8)O` react with `NH_(2)OH` how many oximes can be formed A. 8 B. 10 C. 12 D. 6
Description : Which one of the following statement regardings `BF_(3)` is not correct ?
Last Answer : Which one of the following statement regardings `BF_(3)` is not correct ? A. it is a Lewis ... is an electron deficient compound D. it forms adducts
Description : The main factor responsible for weak acidic nature of `BF_(3)` is :-
Last Answer : The main factor responsible for weak acidic nature of `BF_(3)` is :- A. High electronegativity of F B. ... bonding D. `p_(pi)-p_(pi)` back bonding
Description : Number of halides undergoing complete reaction in presence of water under normal conditions is : (i) `BF_(3)` (ii) `BCl_(3)` (iii) `NCl_(3)` (iv) `AlC
Last Answer : Number of halides undergoing complete reaction in presence of water under normal conditions is : (i) `BF_(3)` (ii ... (vi) `PCl_(3)` (vii) `AsCl_(3)`
Description : Which of the following compounds when heated with CO at 423K and 500 atm. Pressure in presence of `BF_(3)` forms ethyl propionate ?
Last Answer : Which of the following compounds when heated with CO at 423K and 500 atm. Pressure in presence of `BF_(3)` forms ... H_(5)` D. `CH_(3)OC_(2)H_(5)`
Description : `FeCl_(3)` solution is acidic due to hydrolysis of :-
Last Answer : `FeCl_(3)` solution is acidic due to hydrolysis of :- A. `FeCl_(3)` B. `Cl^(-)` C. `Fe^(+3)` D. None of these
Description : Which of the following compounds decolourise `Br_(2) - H_(2)O` and also give positive test with neutral `FeCl_(3)` :
Last Answer : Which of the following compounds decolourise `Br_(2) - H_(2)O` and also give positive test with neutral `FeCl_(3)` : A. B. C. D.
Description : A monocarboxylic acid decolourise `Br_(2) - H_(2)O`, on heating with soda lime derivate of styrene is formed , with neutral `FeCl_(3)` , a buff colour
Last Answer : A monocarboxylic acid decolourise `Br_(2) - H_(2)O`, on heating with soda lime derivate of styrene is formed , ... . Acid could be : A. B. C. D.
Description : Compound (A)`C_(7)H_(8)O` is insoluble in aqueous `NaHCO_(3)` and dissolves in aqueous NaOH and gives a characteristic colour with neutral `FeCl_(3)`
Last Answer : Compound (A)`C_(7)H_(8)O` is insoluble in aqueous `NaHCO_(3)` and dissolves in aqueous NaOH and gives a ... colour with `FeCl_(3)`? A. B. C. D.
Last Answer : Compound (A)`C_(7)H_(8)O` is insoluble in aqueous `NaHCO_(3)` and dissolves in aqueous NaOH and gives a ... compound (B) would be : A. B. C. D.
Last Answer : Compound (A)`C_(7)H_(8)O` is insoluble in aqueous `NaHCO_(3)` and dissolves in aqueous NaOH and gives a ... structure of compound A is : A. B. C. D.
Description : Match the following. `{:("List-I","List-II"),((A) XeF_(4),(1) "Distorted octahedral"),((B)XeF_(6),(2) "Tetrahedral"),((C )XeO_(3),(3)"Square planar"),
Last Answer : Match the following. `{:("List-I","List-II"),((A) XeF_(4),(1) "Distorted octahedral"),((B)XeF_(6),(2) "Tetrahedral" ... ` D. `{:(A,B,C,D),(2,4,1,3):}`
Description : Among the following molecules, `(i)XeO_(3)(ii)XeOF_(4)(iii)XeF_(6)` those having same number of lone pairs on `Xe` are:
Last Answer : Among the following molecules, `(i)XeO_(3)(ii)XeOF_(4)(iii)XeF_(6)` those having same number of lone pairs on ... iii) only D. (D) (i),(ii) and (iii)
Description : Amongst `[TiE_(6)]^(2-), [CoF_(6)]^(3-), Cu_(2)Cl_(2)` and `[NiCl_(4)]^(2-)` [Atomic no. `Ti = 22, Co = 27, Cu = 29, Ni = 28`] the colourless species
Last Answer : Amongst `[TiE_(6)]^(2-), [CoF_(6)]^(3-), Cu_(2)Cl_(2)` and `[NiCl_(4)]^(2-)` [Atomic no. `Ti = 22, ... (2)Cl_(2)` D. `TiF_(6)^(2-) and Cu_(2)Cl_(2)`
Description : Consider the coordination compound , `[Co(NH_(3))_(6)]Cl_(3)`. In the formation of the complex, the species which acts as the Lewis acid is :
Last Answer : Consider the coordination compound , `[Co(NH_(3))_(6)]Cl_(3)`. In the formation of the complex, the species which ... -)` C. `Co^(3+)` D. `NH_(3)`
Description : A certain gas, with cp = 0.529Btu/ lb. °Rand R = 96.2ft.lb/lb. °R, expands from 5 cu ft and 80°F to 15 cu ft while the pressure remains constant at 15.5psia. Compute for T2. a.1520°R b. 1620°R c. 1720°R d. 1820°R formula: T2= T1V2/V1
Last Answer : 1620°R
Description : Ten cu. ft of air at 300psia and 400°F is cooled to 140°F at constant volume. What is the transferred heat? a.-120Btu b. -220Btu c.-320Btu d. -420Btu formula: Q= mcv(T2-T1)
Last Answer : -420Btu
Description : A certain gas, with cp = 0.529Btu/lb.°R and R = 96.2 ft.lb/lb.°R, expands from 5 cu ft and 80°F to 15 cu ft while the pressure remains constant at 15.5 psia. Compute for T2. (Formula: T2= T1V2/V1) a. 460°R b. 270°R c. 1620 °R d. None of the above
Last Answer : 1620 °R
Description : Ten cu ft. of air at 300 psia 400°F is cooled to 140°F at constant volume. What is the final pressure? (formula: p2 = p1T2/T1) a. 0 b. 209 psia c. - 420 psia d. None of the above
Last Answer : 209 psia
Description : The magnetic moment for two complexes of empirical formula `Ni(NH_(3))_(4)(NO_(3))_(2).2H_(2)O` is zero and 2.84 BM respectively. The second complex i
Last Answer : The magnetic moment for two complexes of empirical formula `Ni(NH_(3))_(4)(NO_(3))_(2 ... . D. It produces three-fold freezing point depression.
Last Answer : The magnetic moment for two complexes of empirical formula `Ni(NH_(3))_(4)(NO_(3))_(2).2H_(2)O` is zero and ... (H_(2)O)_(2)](NO_(3))_(2)`, octahedral
Last Answer : The magnetic moment for two complexes of empirical formula `Ni(NH_(3))_(4)(NO_(3))_(2).2H_(2)O` is zero ... two B. zero, zero C. two, zero D. two ,two
Description : Total no. of vacant orbitals in valence shell of sulphur when it undergoes formation of `SF_(4)` :-
Last Answer : Total no. of vacant orbitals in valence shell of sulphur when it undergoes formation of `SF_(4)` :- A. 5 B. 4 C. 3 D. 2
Description : Assertion (R) `SF_(6)` is known but `SCl_(6)` is not. Reason (R) Due to small size of F.
Last Answer : Assertion (R) `SF_(6)` is known but `SCl_(6)` is not. Reason (R) Due to small size of F.
Description : Which of these statements incorrectly compare between `SF_(4)` and `SF_(6)` ?
Last Answer : Which of these statements incorrectly compare between `SF_(4)` and `SF_(6)` ? A. both molecule ... with water whereas `SF_(6)` is inert towards water
Description : Which one of the following about `CH_(2)SF_(4)` and `SF_(4)SOF_(4), OCF_(2)` molecules is/are incorrect?
Last Answer : Which one of the following about `CH_(2)SF_(4)` and `SF_(4)SOF_(4), OCF_(2)` molecules is/are incorrect ... will be `lt 120^(@)` in molecule `OCF_(2)`
Description : Which of the following statements(s) is/are incorrect for `SF_(4)` molecule?
Last Answer : Which of the following statements(s) is/are incorrect for `SF_(4)` molecule? A. It has a ... the final product during the hydrolysis of `SF_(4)`
Description : Number of planar atoms in `SF_(6)` is
Last Answer : Number of planar atoms in `SF_(6)` is A. 7 B. 6 C. 5 D. 4
Description : `SF_(6)` is exceptionally stable due to
Last Answer : `SF_(6)` is exceptionally stable due to A. S - F Bond is strong B. Steric reasons C. Un Symmetrical geometry D. Exothermic compound
Description : Assertion:- `SF_(6)` cannot be hydrolysed but `SF_(4)` can be. Reason:- Six F atoms in `SF_(6)` prevent the attack of `H_(2)O` on sulphur atom of `SF_
Last Answer : Assertion:- `SF_(6)` cannot be hydrolysed but `SF_(4)` can be. Reason:- Six F atoms in ` ... D. Statement-I is not correct and Statement-II is correct
Description : Statement-I : `SF_(4)` and `SeF_(4)` are used as fluorinating agent Statement-II : The conversion of `-COOH` to `-CF_(3),C=O` to `CF_(2)` and P = O to
Last Answer : Statement-I : `SF_(4)` and `SeF_(4)` are used as fluorinating agent Statement-II : The ... Statement-I is not correct and Statement-II is correct
Description : Incorrect statement about `SF_(4)` is
Last Answer : Incorrect statement about `SF_(4)` is A. Seesaw Structure B. `Sp^(3)d` hybridization C. One lone pair D. Sulphur is in second excited state
Description : The structrue of `SF_(4)` is
Last Answer : The structrue of `SF_(4)` is A. Squre planar B. Tetrahedral C. see-saw structure D. Octahedral
Description : The hybridisation of sulphur in `SF_(6)` is
Last Answer : The hybridisation of sulphur in `SF_(6)` is A. `sp^(3)` B. `d^(2)sp^(3)` C. `sp^(3)d^(2)` D. `sp^(3)d`
Description : The hybridisation of sulphur in `SF_(4)` is
Last Answer : The hybridisation of sulphur in `SF_(4)` is A. `sp^(3)` B. `sp^(3)d` C. `dsp^(2)` D. `sp^(3)d^(2)`
Description : An organic compound A,`C_(5)H_(8)O` reacts with `H_(2)O, NH_(3)` and `CH_(3)COOH` as described below A is
Last Answer : An organic compound A,`C_(5)H_(8)O` reacts with `H_(2)O, NH_(3)` and `CH_(3)COOH` as described ... 2))underset(||)(C)-underset(H)underset(|)(C)=O`
Description : The compound X and Y in below reaction can be `Ph-NH*NH_(2)+ (X) + (Y) overset(-H_(2)O)(to)`
Last Answer : The compound X and Y in below reaction can be `Ph-NH*NH_(2)+ (X) + (Y) overset(-H_(2)O)(to)` A. ` ... =O + CH_(3)-underset(overset(||)(O))(C)-CH_(3)`
Description : Botanical Words Alphabetical List - CU
Last Answer : CULLION: An orchid. CULM: The jointed and usually hollow stem of grasses. It is in most cases herbaceous but is woody in the bamboo and some other stout species. The term is also sometimes applied to ... the crown of a plant or of its aboveground portion and roots is called a division (go see).
Description : Brass is an alloy of copper and zinc having the relative percentage (A) 60-70% Cu and 30-40% Zn (B) 50-60% Cu and 40-50% Zn (C) 40-50 % Cu and 60-50% Zn (D) 30-40 % Cu and 60-70% Zn
Last Answer : A) 60-70% Cu and 30-40% Zn