Description : In glucose the orientation of the —H and —OH groups around the carbon atom 5 adjacent to the terminal primary alcohol carbon determines (A) D or L series (B) Dextro or levorotatory (C) α and β anomers (D) Epimers
Last Answer : A
Description : In glucose the orientation of the —H and —OH groups around the carbon atom 5 adjacent to the terminal primary alcohol carbon determines (A) D or L series (B) Dextro or levorotatory (C) and anomers (D) Epimers
Last Answer : (A) D or L series
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 : The bond angles associated with the hybrid orbitals of a carbon involved in a triple bond is (a) 180° (b) 120° (c) 109° (d) 45
Last Answer : 180
Description : Which of the following statements about ethene, C2H4, is incorrect? (a) The H–C–H bond angles are approximately 109.5°. (b) There is a total of five sigma bonds. (c) The carbon atoms are sp2 hybridized. (d) The H–C–H bond angles are approximately 120°.
Last Answer : The H–C–H bond angles are approximately 109.5°.
Description : Which of following statements is false about propane? (a) all bond angles are 109.5° (b) each carbon is sp3 hybridized (c) the compound is combustible (d) the compound undergoes polymerization to give polypropylene.
Last Answer : the compound undergoes polymerization to give polypropylene.
Description : On average red blood cells live around 120 days. The spleen is the main organ where old red blood cells are destroyed. During the red blood cell destruction the heme groups turn into bilirubin and this substance is then captured by the liver and later excreted in the bowels as part of the bile.
Last Answer : What are the functions of the spleen?
Description : (3) the number of electrons orbiting around the nucleus Explanation: The chemical behavior of an atom is determined by the number of electrons on its outer shell. As for the chemical bonding properties of ... , and in what ratio atoms will bond to form the 20,000,000 different substances on Earth.
Last Answer : Methyl phenyl ether can be obtained by reacting - (1) phenolate ions and methyl iodide (2) methoxide ions and bromobenzene (3) methanol and phenol (4) bromobenzene and methyl bromide
Description : Which of the following species contains three bond pairs and one lone pair around the central atom? (1) PCl3 (2) H2O (3) BF3 (4) NH2
Last Answer : PCl3
Description : What kind of bond does a carbon atom make?
Last Answer : Carbon is a basic element.
Description : What The double bond between carbon atom and two oxygen atoms has two characteristics what are they?
Last Answer : Four valence electrons are shared.Valence electrons are shared between oxygen atoms.
Description : What is the maximun number of atoms that a carbon atom can bond with in an organic compoud?
Last Answer : Feel Free to Answer
Description : The unsaturated hydrocarbons having double bond between carbon atom are
Last Answer : alkene.
Description : Catenation is a property of the carbon atom which describes its ability to (a) bond with other carbon atoms (b) form double and triple bonds (c) exist in plant and animal form (d) form bonds in its ground state
Last Answer : bond with other carbon atoms
Description : Which of the following statement about the peptide bond is true? (A) It is a carbon-carbon bond (B) It has cis hydrogen and oxygen groups (C) It is planar (D) It has rotational freedom
Last Answer : Answer : B
Description : Which of the following is not correct concerning substitution and elimination reactions of alkyl halides? (a) The electrophile replaces the leaving group. (b) Compounds containing electron-donating groups bonded to an ... replaced by another atom or group in substitution reactions. (d) (a) and (b)
Last Answer : (a) and (b)
Description : A certain sum of money is distributed among A, B and C in the ratio of ` 1/2 : 1/3 : 1/4` and B gets Rs. 120. Find the shares of A and C.
Last Answer : A certain sum of money is distributed among A, B and C in the ratio of ` 1/2 : 1/3 : 1/4` and B gets Rs. 120. Find the shares of A and C.
Description : The total agricultural land in a village is 1200 hectares. This is distributed among 320 families who form four groups in the following pattern. It is assumed that the land is distributed equally within each group. Identify the group of small ... B 180 300 C 30 300 D 10 300 (1) A (2) B (3) C (4) D
Last Answer : B 180 300
Description : What is meant by restricted rotation around of carbon-carbon double bond? What type of isomerism does it lead to?
Last Answer : Ans. The carbon-carbon double bond in alkene contains one sigma bond and one pi-bond. The Pibond involves the overlapping of unhybridised p orbital of two carbon atom .The rotation around the ... , the free rotation around C=C double bond is restricted, which gives rise to Geometrical Isomerism.
Description : Which of the following intermediates have the complete octet around the carbon atom?
Last Answer : Which of the following intermediates have the complete octet around the carbon atom? A. Carbonium ion B. Carbanion C. Free radical D. Carbene
Description : Two sugars which differ from one another only in configuration around a single carbon atom are termed (A) Epimers (B) Anomers (C) Optical isomers (D) Stereoisomers
Last Answer : (A) Epimers
Description : The larger of two supplementary angles exceeds thrice the smaller by 20 degrees. Find them. -Maths 10th
Last Answer : Two angles are supplementary. If one angle is x, then other angle is (180-x) let x > (180-x) x = 3(180-x)+20 = 560 - 3x hence 4x = 560 or x = 140 hence angles are 140° and 40°
Description : if the sum of the measures of two angles is 180 degrees the angels are?
Last Answer : if the sum of the measures of two angles is 180 degrees the angels are
Description : What is the perimeter of triangle if its longest side is 162cm when two of its angles are 37.25 degrees and 48.4 degrees?
Last Answer : The largest angle then will be 94.35 degrees opposite the longest sides of 162cm and by using the sine rule of 120/sin(94.35) = b/sinB = c/sinC the perimeter of the triangle works out as 381.83cm rounded to two decimal places.
Description : What is the perimeter and area of a triangle whose longest side is 162cm when two of its angles are 37.25 degrees and 48.4 degrees?
Last Answer : Using the sine rule in trigonometry the perimeter of thetriangle is 381.83 cm and its area is 5956.67 square cm bothrounded to two decimal places
Description : How many sides does it have if a regular polygon has interior angles of 165 degrees?
Last Answer : Each exterior angle is 180-165 = 15 degrees and so it has 360/15= 24 sides
Description : What are angles whose measurement is in between 180 degrees and 360 degrees called?
Last Answer : A single angle that measures between 0 and 90 degrees
Description : If the sum of interior angles of a polygon is 4680 degrees how many sides does the polygon have?
Last Answer : 15 sides
Description : What are two angles called whose sum is 180 degrees?
Last Answer : Angles that add up to 180 degrees are called supplementaryangles.
Description : What is the height of a hill when the distance between its angles of elevation which are 20.92 degrees and 31 degrees on level ground is 110 meters?
Last Answer : Using trigonometry the height of the hill works out as 115.58meters rounded to two decimal places
Description : What is the perimeter and height of a triangle that has a base length of 15cm with base angles of 28.67 degrees and 15.5 degrees?
Last Answer : Using the sine formulae of a/A=b/B=c/C and A/a=B/b=C/c intrigonometry the perimeter of the triangle is 31.08 cm with aheight of 2.76 cm both rounded to two decimal places.
Description : What is the height of a mountain when the distance between its angles of elevation which are 16.6 degrees and 22.3 degrees on level ground is 500 meters?
Last Answer : This can be solved using the Tangent trigonometric ratio.The larger angle of elevation is the closer angle.Let the horizontal distance from this point to the peak of themountain be d metres; then:height = d ... tan 22.3°≈ 546 m(Generally mountains are more than 600 m, so this is more of ahill.)
Description : What is the height of a triangle when the distance between angles 62 degrees and 48 degrees is 1.8 cm?
Last Answer : There is probably a trick that I don't know (can't think of atthe moment), but you can use the sine rule and sine ratio:The third angle is 180° - (62° + 48°) = 70° and is opposite theside of length 1.8cm.The side ... / sin 70°) sin 62°→ height = 1.8 sin 48° sin 62° / sin 70° cm ≈ 1.3 cm
Description : What The sum of the interior angles of a polygons is 7200 degrees how many sides does it have?
Last Answer : It will have (7200+360)/180 = 42 sides
Description : How many degrees are in 1 12 right angles?
Last Answer : 225 degrees
Description : When angles of a triangle adds up to 125 degrees. What is the sze of the third angle?
Last Answer : Its 3rd angle is 180-125 = 55 degrees
Description : What is the missing side of a triangle if two sides are 18.5cm and 11.1cm whose opposite angles add up to 60 degrees?
Last Answer : From the given information the missing side must be oppositeangle 120 degrees and by using the cosine rule in trigonometry themissing side works out as 25.9cm
Description : What are two angles together measure 90 degrees?
Last Answer : Need answer
Description : What is the length of the 3rd side of a triangle having sides of 17.1cm and 28.8cm whose opposite angles add up to 72 degrees?
Last Answer : The largest angle then is 108 degrees that is opposite the 3rdside which is the longest side and by using the cosine rule intrigonometry it is 37.77cm in length rounded to two decimalplaces
Description : How many angles in a scalene triangle have the same number of degrees?
Last Answer : 0 do
Description : What is the height of a building when the distance between its angles of elevation which are 29 degrees and 37 degrees is 30 meters on level ground?
Last Answer : Using trigonometry its height works out as 63 meters to thenearest meter.--------------------------------------------------------------------------------------------------------let ... substitute the values of α, β and x in and find theheight:h = (30 m tan 37° tan 29°)/(tan 37° - tan 29°) ≈ 63 m
Description : What do you call angles with a sum of 180 degrees?
Last Answer : supplementary
Description : If two of a triangle's angles measure 42 degrees and 48 degrees how would you classify that triangle?
Last Answer : It's important to remember that a triangle's angles will always total 180 degrees.180 - 42 - 48 = 90.The last angle is 90 degrees, so this is a right triangle.
Description : A simple half-wavelength antenna radiates the strongest signal A. at 45 degrees to its axis B. parallel to its axis C. at right angles to its axis D. at 60 degrees to its axis
Last Answer : C. at right angles to its axis
Description : During free vibration, different degrees of freedom oscillate with different phase angles.
Last Answer : False
Description : To facilitate entry of a catheter into the male urethra, the penis should be positioned at which of the following degree angles (in relation to the body)? a) 90 degrees A right ... and inappropriately positioned for catheterization. d) 270 degrees A 270-degree angle is a physical impossibility.
Last Answer : a) 90 degrees A right angle straightens the urethra and makes it easier to insert the catheter.
Description : In a waveguide, what is a frequency that would cause angles of incidence and reflection to be zero degrees?
Last Answer : Critical Frequency
Description : According to standard convention, the angles of incidence and reflection for a plane surface are measured from: w) the reflecting surface x) lines at 45 degrees to the reflecting surface y) a line at 90 degrees to the reflecting surface z) there is no standard
Last Answer : ANSWER: Y -- A LINE AT 90 DEGREES TO THE REFLECTING SURFACE