Description : The number of P-O-P bonds in cyclic trimetaphosphoric acid is :
Last Answer : The number of P-O-P bonds in cyclic trimetaphosphoric acid is : A. zero B. two C. three D. four
Description : P and Q are isomer of dicraboxylic acid `C_(4)H_(4)O_(4)` Both decolourixe `Br_(2)//H_(2)O`. On heating , P forms the cyclic anhydride. Upon treatment
Last Answer : P and Q are isomer of dicraboxylic acid `C_(4)H_(4)O_(4)` Both decolourixe `Br_(2)//H_(2)O`. On ... sequences V and W are respectively A. B. C. D.
Description : `P` and `Q` are isomers of dicarboxylic acid `C_(4)H_(4)O_(4)`. Bothdecolorize `Br_(2)//H_(2)O`. On heating, `P` forms the cyclic anhydride. Upon trea
Last Answer : `P` and `Q` are isomers of dicarboxylic acid `C_(4)H_(4)O_(4)`. Bothdecolorize `Br_(2)// ... . Optically inactive pair (T, U) and optically inactive S
Description : The diagonals AC and BD of a cyclic quadrilateral ABCD intersect at P. Let O be the circumcentre of ∆APB and H be the orthocentre -Maths 9th
Last Answer : answer:
Description : Benzene undergoes substitution reaction more easily than addition reaction because (a) it has a cyclic structure (b) it has three double bonds (c) it has six hydrogen atoms (d) there is delocalization of electrons
Last Answer : there is delocalization of electrons
Description : How many `P = O` bonds are present in `(HPO_(3))_(3)` ?
Last Answer : How many `P = O` bonds are present in `(HPO_(3))_(3)` ?
Description : Asseration: Cyclic trimer of `SO_(3)` possesses have six membered hetero-cyclic chains made up of `S` and `O`-atoms Reason: Cyclic trimer of `SO_(3)`
Last Answer : Asseration: Cyclic trimer of `SO_(3)` possesses have six membered hetero-cyclic chains made up of `S` and ` ... SO_(3)` is referred as `gamma-SO_(3)`.
Last Answer : Asseration: Cyclic trimer of `SO_(3)` possesses have six membered hetero-cyclic chains made up of `S` and ` ... C. `2,12sigma,4pi` D. `4,12sigma, 3pi`
Last Answer : Asseration: Cyclic trimer of `SO_(3)` possesses have six membered hetero-cyclic chains made up of ` ... -I is not correct and Statement-II is correct
Description : If bisectors of opposite angles of a cyclic quadrilateral ABCD intersect the circle, circumscribing it at the points P and Q, prove that PQ is a diameter of the circle. -Maths 9th
Last Answer : Given, ABCD is a cyclic quadrilateral. DP and QB are the bisectors of ∠D and ∠B, respectively. To prove PQ is the diameter of a circle. Construction Join QD and QC.
Description : The delocalized π system in benzene is formed by a cyclic overlap of 6 orbitals. (a) s (b) p (c) sp (d) sp2
Last Answer : p
Description : What is the I-U-P-A-C (pron: eye-you pack) name for a cyclic alkane containing four carbons?
Last Answer : ANSWER: CYCLOBUTANE
Description : Nitrogen forms the largest number of oxides as it is capable of forming stable multiple bonds with oxygen. They range from `N_(2)O` (O.S of nitrogen +
Last Answer : Nitrogen forms the largest number of oxides as it is capable of forming stable multiple bonds with ... red D. Nitrogen dioxide is not acidic oxide
Description : Nitrogen forms the largest number of oxides as it is capable of forming stable multiple bonds with oxygen. They range of `N_(2)O` (O.S of nitrogen +1)
Last Answer : Nitrogen forms the largest number of oxides as it is capable of forming stable multiple bonds with oxygen. They range ... C. `NO_(2)` D. both A and C
Description : Number of `S-O-S` bonds and hybridisation of sulphur in `gamma`-form of sulphur trioxide?
Last Answer : Number of `S-O-S` bonds and hybridisation of sulphur in `gamma`-form of sulphur trioxide? A. `3,sp^(2)` B. `2,sp^(2)` C. `3,sp^(3)` D. `0,sp^(3)`
Description : Find thetotal number of B-O bonds in peroxoborate.
Last Answer : Ans. 8 covalent bonds
Description : 1. Who is the executive head of a Municipal Corporation? 2. What is the maximum number of hydrogen bonds in a H2 O molecule? 3. How is the contribution of agriculture to India's ... largest number of sugar mills? 20. Among which class did Indian National Congress find wide acceptance initially?
Last Answer : Answer : 1. Commissioner 2. 4 3. Decreasing 4. Sone 5. Aurangzeb 6. Arjun Singh 7. B. H. C. 8. By consensus 9. Narmada 10. Mir Jafar 11. 30 - 300 MHz 12. Satellite launching 13. National ... 15. Agra 16. Ecology 17. Government of India Act, 1935 18. Urea 19. Uttar Pradesh 20. Educated middle class
Description : Treatment of pentoses with a concentrated mineral acid yields a cyclic aldehyde known as (A) Pentaldehyde (B) Cyclopental (C) Hexaldehyde (D) Furfural
Last Answer : Answer : D
Description : The following are true about parathyroid hormone a. it is an 84 amino acid peptide hormone b. it increases calcium absorption from the gastrointestinal tract c. it acts on a cell surface receptor that increases intracellular cyclic AMP d. all above
Last Answer : all above
Description : The compound in which the number of `d pi - p pi` bonds are equal to those present in `ClO_(4)` -
Last Answer : The compound in which the number of `d pi - p pi` bonds are equal to those present in `ClO_(4)` - A. `XeF_(4)` B. `XeO_(3)` C. `XeO_(4)` D. `XeF_(6)`
Description : The number of s and p bonds in `XeO_(3)` molecule are
Last Answer : The number of s and p bonds in `XeO_(3)` molecule are A. 1s , 2p B. 3s , 3p C. 3s , 0p D. 2s , 1p
Description : Which of the following has more number of `p pi-dpi` bonds?(all central atoms are in excited states)
Last Answer : Which of the following has more number of `p pi-dpi` bonds?(all central atoms are in excited states) A. `SO_(2)` B ... `SO_(3)^(2-)` D. `CO_(3)^(2-)`
Description : The enthalpy changes at 298 K in successive breaking of `O-H` bonds of water, are `H_(2)O(g) rarr H(g)+OH(g),DeltaH=498kJ mol^(-1)` `OH(g) rarr H(g)+O
Last Answer : The enthalpy changes at 298 K in successive breaking of `O-H` bonds of water, are `H_(2)O(g) rarr H(g)+OH(g), ... KJ mol"^(-1)` D. `463 "KJ mol"^(-1)`
Description : Assertion: The O - O bond lengths in ozone molecule are intermediate between single and double bonds. Reason: `O_(3)` molecule is a resonance hybrid.
Last Answer : Assertion: The O - O bond lengths in ozone molecule are intermediate between single and double bonds. ... I is not correct and Statement-II is correct
Description : At the lowest energy level α-helix of polypeptide chain is stabilised (A) By hydrogen bonds formed between the H of peptide N and the carbonyl O of the residue (B) Disulphide bonds (C) Non polar bonds (D) Ester bonds
Last Answer : Answer : A
Description : Explain why the water molecule has a bent shape and a bond angle less than 109.5° The electron repulsion between the two lone pairs of electrons on the oxygen of water causes the O–H bonds to squeeze close together
Last Answer : The electron repulsion between the two lone pairs of electrons on the oxygen of water causes the O–H bonds to squeeze close together
Description : Which of the bonds in Ethyl alcohol (CH3CH2OH) will undergo heterolytic bond fission most readily? (a) O–H (b) C–H (c) C–O (d) C–C
Last Answer : O–H
Description : Statement-I : Elements of oxygen family are not capable of forming `p pi-p pi` bonds with other elements of smaller size like C, N ets Statement-II :
Last Answer : Statement-I : Elements of oxygen family are not capable of forming `p pi-p pi` bonds with ... Statement-I is not correct and Statement-II is correct
Description : Which of the following contains `p pi-dpi` bonds
Last Answer : Which of the following contains `p pi-dpi` bonds A. `NO_(2)` B. `SO_(3)` C. `SO_(2)` D. Both 2 and 3
Description : How many covalent bonds does P have?
Last Answer : Need answer
Description : Which of the following is not characteristic of a p bond? (a) A p bond results from lateral overlap of atomic orbitals (b) A p bond may be formed by the overlap of p - or d - orbitals (c) p bonds are obtained from hybrid orbitals (d) p bonds is formed when a bond already exists
Last Answer : Ans:(c)
Description : General crushing equation is given by d(P/m) = -K (dD̅S /D̅ n S ). Bond's crushing law is obtained by solving this equation for n = __________ and feed of infinite size. (A) 1 (B) 1.5 (C) 2 (D) 2.5
Last Answer : (B) 1.5
Description : Pi bonds are formed by the overlap of: w) unhybridized p orbitals x) sp2 hybridized orbitals y) sp hybridized orbitals z) unhybridized s orbitals
Last Answer : ANSWER: W -- UNHYBRIDIZED P ORBITALS
Description : Assertion (A): o-phenol sulphonic acid on heating at `100^(@)C` changes to p-phenol sulphonic acid. Reason : Sulphonation of phenol is a reversible pr
Last Answer : Assertion (A): o-phenol sulphonic acid on heating at `100^(@)C` changes to p-phenol sulphonic acid. ... in correct D. A is incorrect but R is correct
Description : Assertion: `p`-nitrophenol is a stronger acid than `o`-nitrophenol. Reason: Intramolecular hydrogen bonding makes the `o`-isomer weaker than the `p-`i
Last Answer : Assertion: `p`-nitrophenol is a stronger acid than `o`-nitrophenol. Reason: Intramolecular hydrogen bonding ... D. A is incorrect but R is correct
Description : Which acid is weaker than benzoic acid? (a) p-Methylbenzoic acid (b) p-Chlorobenzoic acid (c) p-Nitrobenzoic acid (d) o-Chlorobenzoic acid
Last Answer : p-Methylbenzoic acid
Description : Which of the following statements is true : (a) o-Nitrobenzoic acid is more acidic than p-nitrophenol (b) o-Nitrobenzoic acid is less acidic than p-nitrophenol (c) o-Nitrobenzoic acid and p-nitrobenzoic acid have the same acid strength (d) None of these statements is true
Last Answer : o-Nitrobenzoic acid is more acidic than p-nitrophenol
Description : Benzaldehyde reacts with a mixture of concentrated sulfuric acid and nitric acid to give (a) p-Nitrobenzaldehyde (b) o-Nitrobenzaldehyde (c) p-Nitrobenzoic acid (d) m-Nitrobenzaldehyde
Last Answer : m-Nitrobenzaldehyde
Description : Nitration of nitrobenzene with HNO3/H2SO4 gives : (a) m-dinitrobenzene (b) o-dinitrobenzene (c) p-dinitrobenzene (d) m-nitrobenzenesulfonic acid
Last Answer : m-dinitrobenzene
Description : Which of the following statements is not valid for oxoacids of phosphorus? (1) All oxoacids contain atleast one P = O unit and one P – OH group (2) . (3) Hypophosphorous acid is a diprotic acid. (4) All oxoacids contain tetrahedral four coordinated phosphorous
Last Answer : Orthophosphoric acid is used in the manufacture of triple superphosphate.
Description : The total number of cyclic structure as well as stereoisomers possible for a compound with the molecular formula `C_(5)H_(10)` is:
Last Answer : The total number of cyclic structure as well as stereoisomers possible for a compound with the molecular formula `C_(5)H_(10)` is:
Description : The number of ATP molecules formed during cyclic phosphorylation are a. One b. Two c. Four d. Six
Last Answer : Ans: D
Description : What is the number of sigma `(sigma)` and pi `(pi)` bonds present in sulphuric acid molecule ?
Last Answer : What is the number of sigma `(sigma)` and pi `(pi)` bonds present in sulphuric acid molecule ? A. 6 `sigma` ... ` and 4 `pi` D. 2 `sigma` and 2 `pi`
Description : Statement-I : Number of peroxide bonds in permono and perdisulphuric acid are 1 and 2 respectively Statement-II : Both are dibasic and permonosulphuri
Last Answer : Statement-I : Number of peroxide bonds in permono and perdisulphuric acid are 1 and 2 respectively ... I is not correct and Statement-II is correct