Description : Predict which of the following alkenes reacts the fastest with HCl? (a) CH3CH2CH2CH2CH=CH2 (b) cis-CH3CH2CH=CHCH2CH3 (c) trans-CH3CH2CH=CHCH2CH3 (d) (CH3)2C=CHCH2CH3
Last Answer : (CH3)2C=CHCH2CH3
Description : Compound (A) reacts with sodium metal to form one mole of H2. The compound (A) can be (a) CH3CH2CH=CH2 (b) HOCH2CH2CH2CH2OH (c) CH=CH–CH=CH2 (d) CH3CH2CH2CH2OH
Last Answer : HOCH2CH2CH2CH2OH
Description : In the reaction of propene with HCl, H+ ion acts as the : (a) electrophile (b) carbonium ion (c) nucleophile (d) carbanion
Last Answer : electrophile
Description : Which of the following statements about propene, CH3CH=CH2, is correct? (a) All nine atoms lie in the same plane. (b) The compound has a cis and trans isomer. (c) There is a total of eight sigma bonds. (d) All the carbon atoms are sp2 hybridized
Last Answer : There is a total of eight sigma bonds.
Description : Hinge region, the region of Ig molecule which is flexible and more exposed to enzymes is the (A) Region between first and second constant regions of H chain (domains CH1 and CH2) (B) Region between second and ... H chain (CH2 and CH3) (C) Variable regions of H chain (D) Variable regions of L chain
Last Answer : Answer : A
Description : The class specific function of the different immunoglobulin molecules is constituted by (A) Variable region of L chain (B) Constant region of H chain (C) Variable region of H chain (D) Constant region particularly CH2 and CH3 of H chain
Last Answer : Answer : D
Description : Which of the following compounds would react most rapidly in an SN2 reaction? (a) CH3CH2I (b) CH2=CH–I (c) (CH3)2CHI (d) (CH3)3CI
Last Answer : CH3CH2I
Description : The major product Y in the following sequence of reaction is: Aniline `overset((i) NaNO_(2)//HCl,273K)underset((ii)CuCN//KCN)to(X) overset((i)"DIBAL-H
Last Answer : The major product Y in the following sequence of reaction is: Aniline `overset((i) NaNO_(2)//HCl,273K)underset((ii)CuCN ... H_(2)O)to (Y)` A. B. C. D.
Description : In the reaction, `C_(6)H_(5)NH_(2)underset(0-5^(@)C)overset(NaNO_(2)+HCl)rarr(A)underset(KCN)overset(CuCN)rarr(B)overset(H^(+)//H_(2)O)rarr(C)` the pr
Last Answer : In the reaction, `C_(6)H_(5)NH_(2)underset(0-5^(@)C)overset(NaNO_(2)+HCl)rarr(A)underset(KCN)overset(CuCN ... COOH` C. `C_(6)H_(5)OH` D. none of these
Description : 22. \( H _{2} O \) can act either as an acid or base. Which of the following reaction best illustrate the behaviour of water as a base?(a) \( H _{2} O + NH _{3} \rightarrow OH ^{+}+ NH _{4}^{-} \)(b) \( H _{ ... O \rightarrow H _{3} O ^{+}+ Cl ^{-} \)(d) \( HCl + NaOH \rightarrow NaCl + H _{2} O \)
Last Answer : 22. \( H _{2} O \) can act either as an acid or base. Which of the following reaction best illustrate ... HCl + NaOH \rightarrow NaCl + H _{2} O \)
Description : What Mass Of Calcium Carbonate Is Needed For Complete Reaction With The HCl In 2HCl(aq) plus CaCO 3 (s) CaCl 2 (aq) plus H 2 O(l) plus CO 2 (g)?
Last Answer : Need answer
Description : NaHCO 3 + HCl NaCl + H 2 O +CO 2 is the correct chemical reaction happening inside stomach when child takes antacid. (a) Yes (b) No (c) May be
Last Answer : (a) Yes
Description : Which of the following pairs of compounds could NOT be used to create a buffer solution? Would it be: w) HCL and NaCl (read: H - C - L and N - A - C - L) x) HCN and NaCN (read: H - C - N and N - A - C - N) y) NH3 ... - H - 4 - C - L) z) HNO2 and NaNO2 (read: H - N - O -2 and N - A - N - O - 2)
Last Answer : ANSWER: W -- HCL AND NaCl (read: H - C - L and N - A - C - L)
Description : Is (CH2 — CH — C6H5 ) n a homo polymer or a copolymer.
Last Answer : Ans. It is a homo polymer and the monomer from which it is obtained in styrene C6H5 CH = CH2 .
Description : Which of the following terms best describes the compound below? CH3(CH2)26CO2CH2(CH2)32CH3 (a) a fat (b) a wax (c) a terpene (d) an unsaturated triglyceride
Last Answer : a wax
Description : Which of the following terms best describes the compound below? CH3(CH2)7CH=CH(CH2)7CO2H (a) an unsaturated fatty acid (b) a triglyceride (c) a synthetic detergent (d) a micelle
Last Answer : an unsaturated fatty acid
Description : Which of the following terms best describes the compound below? CH3(CH2)12CO2H (a) a fatty acid (b) an oil (c) a wax (d) a soap
Last Answer : a fatty acid
Description : CH3(CH2)4 is the sodium salt of hexanoic acid. The water solubility of this salt is : (a) higher than that of hexanoic acid (b) lower than that of hexanoic acid (c) completely insoluble (d) not predictable
Last Answer : higher than that of hexanoic acid
Description : In adipic acid, HOOC(CH2)nCOOH, n is equal to (a) 1 (b) 2 (c) 3 (d) 4
Last Answer : 4
Description : In succinic acid, HOOC(CH2)nCOOH, n is equal to (a) 1 (b) 2 (c) 3 (d) 4
Last Answer : 2
Description : Diethyl ether reacts with excess of hot concentrated HI to form (a) CH3CH2I + CH3CH2OH (b) Only CH3CH2OH (c) CH3CH2OH + CH2=CH2 (d) Only CH3CH2
Last Answer : Only CH3CH2
Description : Which is the correct order of decreasing acidity in the following compounds? A. H2O B. CH3CH3 C. NH3 D. CH2=CH2 E. HC≡CH (a) A > E > C > D > B (b) A > E > D > B > C (c) E > A > C > B > D (d) A > C > E > D > B
Last Answer : A > E > C > D > B
Description : Propadiene, CH2=C=CH2, is (a) a planar compound (b) a cumulated diene (c) an isolated diene (d) a conjugated diene
Last Answer : a cumulated diene
Description : How many σ (sigma) bonds are there in CH2=CH—CH=CH2? (a) 3 (b) 6 (c) 9 (d) 12
Last Answer : 9
Description : Which of the following compounds will react most readily with bromine in CCl4? (a) CH3CH2CH3 (b) (CH3)3CH (c) CH3CH=CH2 (d) (CH3)4C
Last Answer : CH3CH=CH2
Description : Marsh gas mainly contains (a) CH2=CH2 (b) CH4 (c) H2S (d) CHCl3
Last Answer : CH4
Description : Which of the following compounds will show geometrical isomerism? (a) CH2=CHCl2 (b) ClCH=CHBr (c) CH2=CHCl (d) Cl2C=CBr2
Last Answer : ClCH=CHBr
Description : Which of the following compounds show geometrical isomerism (a) (CH3)3N (b) CH3CH=CH2 (c) (CH3)2NH (d) CH3CH=CHCH
Last Answer : CH3CH=CHCH
Description : Which of the following hydrocarbons has the shortest C–C bond length? (a) CH2=CH2 (b) CH3CH3 (c) HC≡CH
Last Answer : HC≡CH
Description : Compound in which carbons use only sp3 hybrid orbitals for bond formation is (a) CH3CH2CH3 (b) CH3C≡CH (c) CH3CH=CH2 (d) CH2=CH—CH=CH2
Last Answer : CH3CH2CH3
Description : Why does a H+ ion attacking a carbon-carbon double bond add to the carbon with the least number of substituents? (a) the reaction is resonance stabilized. (b) the hybrid geometry favors this ... tends to attack stable centers of negative charge. (d) a more stable carbonium ion is generated.
Last Answer : a more stable carbonium ion is generated.
Description : NaOH + HCl = What is the reaction of NaCl + H2O ?
Last Answer : mitigation reaction.
Description : Zn + 2 HCl = H2 + ZnCl, is an example of which type of reaction? (1) Double displacement reaction (2) Combination reaction (3) Single displacement reaction (4) Decomposition reaction
Last Answer : (3) Single displacement reaction Explanation: This reaction is an example of single displacement reaction. In Substitution or Single Replacement Reactions, a single free element replaces or is substituted for one of the elements in a compound.
Description : Aniline is prepared by (a) the reaction of benzene with ammonia (b) the reduction of nitrobenzene with Sn/HCl (c) the dehydrogenation of nitrobenzene (d) the reaction of nitrobenzene with I2/NaOH
Last Answer : the reduction of nitrobenzene with Sn/HCl
Description : Acetone undergoes reduction with zinc amalgam in HCl to form propane. This reaction is known as (a) Clemmensen reduction (b) Wolf-Kishner reduction (c) Rosenmund reduction (d) Aldol condensation
Last Answer : Clemmensen reduction
Description : How an — OH group attached to carbon in the benzene ring activates benzene towards electrophilic substitution ?
Last Answer : The lone pair of electrons present on oxygen atom enter into resonance with the benzene ring. As a result, the electron density becomes higher at o- and p- position and due to higher electron density, the ring gets activated towards electrophilic substitution.
Description : Why do aldehydes undergo nucleophilic addition reactions while esters undergo nucleophilic acyl substitution reactions? (a) The carbonyl carbon of an ester is more electrophilic than that of an aldehyde. (b) ... adds to an aldehyde, neither H− nor R− can be eliminated since they are strongly basic
Last Answer : Once the nucleophile adds to an aldehyde, neither H− nor R− can be eliminated since they are strongly basic
Description : Which statement about the carbonyl group is NOT true? (a) The carbonyl carbon is sp2 hybridized. (b) The bond angles among the three atoms attached to the carbonyl carbon are 120°. (c) ... attached to the carbonyl carbon form a nonplanar geometry. (d) The carbonyl group forms resonance structures.
Last Answer : The three atoms attached to the carbonyl carbon form a nonplanar geometry
Description : Identify type of the intermolecular forces in the following compounds. a. CH3 – OH b. CH2 = CH2 c. CHCl3
Last Answer : Identify type of the intermolecular forces in the following compounds. a. CH3 – OH b. CH2 = CH2 c. CHCl3 d. CH2Cl2
Description : What is the charge of ch2?
Last Answer : Carbon has a charge of -4 by itself. Each hydrogen atomcontributes +1, so the net charge then, is -2.
Description : How many atoms in Ch2?
Last Answer : URR MOMMMMM NIGGGGAAAAA
Description : What is the name for CH3-CHBr-CH2-CH3?
Last Answer : This compound is bromobutane.
Description : What is the molecular formula of the compound CH2 with molar mass = 42.0?
Last Answer : Apex
Description : The compound having the formula H2N—CO—NH—CH2—CH2—CH2—CH— COOH is | NH2 (A) Lysine (B) Glutamine (C) Serine (D) Citrulline
Description : Cysteine has the formula: (A) CH3SH (B) H2N—CH2—COOH (C) HS—CH2—CH(NH2)—COOH (D) S—CH2—CH(NH2)—COOH | S—CH2—CH(NH2)—COOH
Last Answer : Answer : C
Description : Which combination of gases is suitable for fruit ripening? (a) 80% CH4 and 20% CO2 (b) 80% CO2 and 20% O2 (c) 80% C2H4 and 20% CO2 (d) 80% CO2 and 20% CH2
Last Answer : (c) 80% C2H4 and 20% CO2
Description : The figure shows a hypothetical tetrapeptide portion of a protein with parts labelled A-D. Which one of the following options is correct? - HN - CH - CO - NH - CH - CO - NH - CH - CO - ... -terminal amino acid and D is N-terminal amino acid. (d) A is a sulphur containing amino acid methionine.
Last Answer : (a) D is the acidic amino acid-glutamic acid.
Description : Vinyl chloride (CH2 = CH.Cl) is produced by the thermal pyrolysis of ethylene dichloride at a pressure & temperature of (A) 4 kgf/cm2 & 500°C (B) 10 kgf/cm2 & 1000°C (C) 40 kg/cm2 & 200°C (D) 100 kgf/cm2 & 500°C
Last Answer : (A) 4 kgf/cm2 & 500°C