Category Archives: POP (pen on paper) Exam and TMA Questions and answer

CHM102 Introduction to organic chemistry TMA 3 question and answer

INTRODUCTION TO ORGANIC CHEMISTRY TMA 3 Question 2: The double bond in alkene is converted into ____ by means of peracides A. Ethyne B. Epoxide C. Ethoxide D. Ether The answer is Question 3: Alkynes react with chlorine and bromine

CHM 102 Introductory Organic Chemistry TMA1 Questions and answer

Introductory Organic Chemistry TMA 2 Question 1: The decarboxylation of carboxylic acid yields which of the following compound A. Alkylhalides B. Alkanes C. Alkynes D. Alkenes The answer is B. Alkanes Question 2 : An alkyl group that has three

CHM102 introduction to Organic Chemistry TMA1

Introductory Organic Chemistry TMA1 Question 1: Reactions that lead to the attachment of an alkyl group to a molecular fragment are called A. estenfication B. Carbonization C. Alkylation D. Dealkylation The answer is C. Alkylation Question 2:______also known as acetylenes,

TMA3 CHM311 PETROLEUM CHEMISTRY QUESTION AND ANSWER

TMA3 CHM311 PETROLEUM CHEMISTRY Hydrocarbons heavier than methane that is recovered from natural gas are referred as_____? Natural gas solid Paraffin Natural gas liquid Gasoline The answer is C. Natural gas liquid In order to reduce corrosion problems and to

TMA3 CHM315 CARBOHYDRATE CHEMISTRY QUESTION AND ANSWER

TMA3 CHM315 CARBOHYDRATE CHEMISTRY How many carbon atoms are present in a pyranose? 5 6 7 8 The answer is A. 5 The class of food which is the major source of energy for both plant and animals is? Water

CHM307 TMA3 MOLECULAR STRUCTURE AND SYMMETRY QUESTION AND ANSWER

CHM307 TMA3 MOLECULAR STRUCTURE AND SYMMETRY Question 1. The excited state of an electron is when an electron? Gained energy Absorbs or emits electron Fragment into smaller particles Ready to take part in chemical reaction The answer is A. gained

TMA2 CHM315 CARBOHYDRATE CHEMISTRY QUESTION AND ANSWER

TMA 2 CHM315 CARBOHYDRATE CHEMISTRY A monosaccharide reacts with an alcohol in the presence of an acid catalyst to form_____? Fructose Glucose Glycogen Glycoside The answer is D. Glycoside Aldaric acid is obtained by oxidising One end of a ketone

TMA2 CHM307 ATOMIC MOLECULAR STRUCTURE AND SYMMETRY QUESTION AND ANSWER

TMA2 CHM307 ATOMIC MOLECULAR STRUCTURE AND SYMMETRY Oxygen has 8 electron in its bonding orbital and 4 in antibonding orbital, calculate its bond order. 2 3 4 5 The answer is A. 2 The following are the main aspects of

TMA2 CHM303 ORGANIC CHEMISTRY III QUESTION AND ANSWER

TMA 2 CHM303 ORGANIC CHEMISTRY III Functional groups like nitro and ethers also makes methylene group? Synthetic Functional Attracting Reactive The answer is D. Reactive Dicarboxylic acid shown position Isomerism Decomposition Oxidation Diffusion The answer is A. Isomerism Colour reaction

TMA 3 CHM305 ORGANIC CHEMISTRY QUESTION AND ANSWER

TMA 3 CHM305 ORGANIC CHEMISTRY The properties of cellulose include the following except___? A colourless amorphous substance It hydrolizes to glucose Smooth and lactose Appear solid at room temperature The answer is D. Appears solid at room temperature ____ restore

TMA 3 CHM309 ORGANIC SPECTROSCOPY QUESTION AND ANSWER

TMA 3 CHM309 ORGANIC SPECTROSCOPY One of these is not the application of mass spectrometry Relative molecular mass and structural dimension Mass spectrometry is usually interfaced with gas chromatography to provide structural information about the component of mixture as elute

TMA 3 CHM303 INORGANIC CHEMISTRY QUESTION AND ANSWER

TMA 3 CHM303 INORGANIC CHEMISTRY All of the following are methods of beneficiation of ore except______? Gravity separation Gravity separation Froth flotation Mechanical process The answer is D. Mechanical process Calculation, roasting and smelting are different steps involved in _____?

TMA 3 CHM303 INORGANIC CHEMISTRY QUESTION AND ANSWER

TMA 3 CHM303 INORGANIC CHEMISTRY All of the following are methods of beneficiation of ore except______? Gravity separation Gravity separation Froth flotation Mechanical process The answer is D. Mechanical process Calculation, roasting and smelting are different steps involved in _____?

TMA 3 CHM303 INORGANIC CHEMISTRY QUESTION AND ANSWER

TMA 3 CHM303 INORGANIC CHEMISTRY All of the following are methods of beneficiation of ore except______? Gravity separation Gravity separation Froth flotation Mechanical process The answer is D. Mechanical process Calculation, roasting and smelting are different steps involved in _____?

TMA2 CHM309: ORGANIC SPECTROSCOPY QUESTION AND ANSWER

TMA2 CHM309: ORGANIC SPECTROSCOPY Compounds that contains only mf bond absorbs____? Above 200nm At 200nm Below 200nm Below 100nm The answer is B. At 200nm In spectrophotometer, the purpose of monochromator is to ____? Focus light Distribute light Disperse light

TMA3 CHM391 PRACTICAL CHEMISTRY V- INORGANIC AND ANALYTICAL

TMA3 CHM391 PRACTICAL CHEMISTRY V- INORGANIC AND ANALYTICAL ____ helps to remove impurity from a precipitate Re-precipitation Occlusion Co-precipitation Digestion The answer is A. Re-precipitation _____ is the second step involved in gravimetric analysis Digestion Precipitation Washing Filtration The answer

TMA2 CHM301: PHYSICAL CHEMISTRY QUESTION AND ANSWER

TMA2 CHM301: PHYSICAL CHEMISTRY The maximum useful work that can be obtained from the system at constant temperature and pressure can be symbolised as___ #NAME? du du ds The answer is A. #NAME For an isolated system? dq=0 dq>0 dq=-ve

TMA2 TMA311 PETROLEUM CHEMISTRY QUESTION AND ANSWERS

TMA2 TMA311 PETROLEUM CHEMISTRY The two process used to obtain valuable light products from the gasoline vapour that pass out of the top of the fractionating tower are _____? Adsorption and stripping Fractional distillation and refining Adsorption and stripping Cracking

TMA 2 CHM303 Inorganic Chemistry 111 Question and answer

Question 1: which of these molecule will absorb infrared radiation? A. Molecule with permanent dipole B. Molecule with conjugation C. Molecule with ring structures D. Molecules with long pair of electron The answer is A. Molecule with permanent dipole Question

A. Explain how molecular orbitals are formed?

B. Give the consequence from molecular orbital theory? C. Use bond order to determine the possibility of bond formation in the following molecule: A. Li2 B. Be2 C. He2 D. O2 Answers A. Molecular orbitals are formed by combination of

DEFINE MOLECULAR ORBITALS AND GIVE THE APPROPRIATE COMBINATION OF THE ATOMIC ORBITALS?

molecular orbital molecular orbital can be defined as a mathematical function which explain the wave like behaviour of an electron in a molecule. The appropriate combination of atomic orbitals are: (1s)=1SA + (1S)B (1s)*=1SA – 1SB (2S)=2SA + 2SB (2S)*=2SA

Write the electronic configuration of the first 10 element in the periodic table?

First element in periodic table Answer Element Electronic configuration Hydrogen 1s¹ Helium 1s² Lithium 1s² 2s¹ Beryllium 1s² 2s² Boron 1s²2s²2p¹ Carbon 1s²2s²2p² Nitrogen 1s²2s²2p³ Oxygen 1s²2s²2p⁴ Fluorine 1s²2s²2p5 Neon 1s²2s²2p6

DEFINE EACH OF THE FOLLOWING: PAULI EXCLUSION PRINCIPLE AND HUND’S RULE

PAULI EXCLUSION PRINCIPLE This states that no Two electron in the atom can have four set of quantum numbers. If there are two electron In the same orbit, they must have opposite Spins HUND’S RULE This states that orbitals of

EXPLAIN THE TREND OF IONIZATION ENERGY IN THE PERIODIC TABLE

When we move down the group of periodic table, there is an increase of electron of which in turn increases the number of orbitals for the electron to occupy. Also that lead to reduction of radius from the outer electron

CHM391 TMA 1 practical chemistry v – inorganic and analytical

Question 1: which of the following is not a reason for determining hardness in water? A. Determination of hardness in water provide information about the source of the water ions causing water hardness. B. The environmental engineer use it as

What did you understand by the following terms; (a) Auxochrome (b) bathochromic shift (c) hyperchromic shift?

The question is raise from ultraviolet spectroscopy. Mainly from structure effect that affect the absorptions of UV spectroscopy. Now let see what the word Auxochrome, bathochromic and hyperchromic shift means Auxochrome a) Auxochrome: is a functional group attached to a