Combustion reaction involves reaction between combustible material and oxidiser to form oxidised products. It usually occur when any hydrocarbon react with oxygen to form carbon dioxide and water.
CH4 + O2  CO2 + H2O
Combustion reaction is exothermic reaction i.e it produce heat and thus is commonly called burning.
So answer is b
All statements are correct.
Question Completion Status: QUESTION 5 Which of the following statements about combustion reactions is/are correct? 1....
QUESTION 6 Which of the following statements about combustion reactions is/are correct? i. they are characterized by the reaction of a substance with oxygen ü. they form one or more oxygen-containing compounds, often including water. iii. they emit heat O a ionly b.i, ii, iii c. ii and iii d. i and iii
Question Completion Status: QUESTION 3 In a discussion, students in a group made the following statements about solutions: (1) Homogenous mixtures are solutions (11) The majority component in a solution is the solvent (ii) Solutions are mixtures (iv) Solutions are pure substances Which of the following choices gives correct statements i, ii, iii, iv b. i, iii, iv land in d. 1. il,
Question 1 1 pts Which of the following statements is correct? 1. functional groups with only single bonds undergo elimination and substitution. II. functional groups with double and triple bonds undergo addition. III. functional groups with both single and double bonds undergo substitution. O 1, 11, 111 O ll only O lll only I and II O I and III O II and III I only
1. Complete and balance the following combustion reactions (10 pts) (Hint: the combustion of hydrocarbons involves a reaction with oxygen and produces carbon dioxide and water) (i) ____ C5H12 (pentane) + ____ O2 ____ __________ + ____ ___________ (ii) ____ C6H12 (1-hexene) + ____ O2 ____ __________ + ____ ___________
Question Completion Status: QUESTION 1 Which of the following statements is not true of enzymes? They are essential to all life processes. They are all proteins They are involved in synthesis reactions only They are all catalysts. QUESTION 2 The main route for excretion of cholesterol from the body is: via the lungs. in the urine in the feces through the skin. Click Save and Submit to save and submit. Click Save All Answers to save all answers.
ckboard Remaining Time: 57 minutes, 43 seconds Question Completion Status: QUESTION 4 Compare the following two potential energy diagrams for general reactions I and II. Which statement below is correct with respect to theim corresponding enthalpy of reaction and their relative rates? PE PE Progess of Reaction Progress of Restion I a ReactionI is endothermic, reaction II is exothermic and reaction I proceeds at a faster rate. b. Both reactions are endothermac and reaction I proceeds at a faster rate...
QUESTION 2 In a discussion, students in a group made the following statements about solutions: (0) Homogenous mixtures are solutions (ii) The majority component in a solution is the solvent (iii) Solutions are mixtures (iv) Solutions are pure substances Which of the following choices gives correct statements alli, ili iv 0 b.i, iii, iv i and iv 0 d. i, ii, ili
rect Question 19 0/5 pt Which of the following are oxidation-reduction reactions? 1. PC13 + Cl2 PCIE II. Cu + 2AgNO3 - Cu(NO3)2 + 2Ag III. CO2 + 2LIOH -- Li2CO3 + H20 IV. FeCl2 + 2NaOH - Fe(OH)2 + 2Naci I and II 1.11, and III IV 1, 11, 111, and IV correct Question 20 0/5 pts Answer the following questions that refer to the unbalanced reaction shown below as it occurs in acidic solution: _Cr202- (aq) + __...
Pum a Am Om Diese Question Completion Status: QUESTION 14 Which of the following statements is TRUE? 1. The EPA's tradable allowances program for sulfur dioxide establishes property rights to pollute and helps reduce transaction costs by distributing allowances, maintaining databases, and monitoring emissions. II. One criticism of tradable allowances is that they prohibit nonbusinesses and environmental groups from purchasing the allowances. III. The tradable allowances for sulfur dioxide have performed poorly because electricity output has increased, causing a rise...
Question Completion Status QUESTION 7 Which of the following statements about voltage is correct? a. Voltage flows between positive and negative terminals of a battery According to Ohm's Law, increasing the voltage across a resistor results in a decrease in the amount of current flowing through the Voltage is defined as the work performed to move charges in an electric field, per unit charge. s defined as the time rate of change of the magnetic field surrounding a conductor in...