2 Mohamed is learning about straight chain and branched chain compounds. He knows that straight chain compounds have no branches. Which of the following is a straight chain compound? A Isobutane B Isopentane C n-Pentane D Neopentane
5 Julia is studying functional groups. She learns that functional groups determine chemical reactivity. What functional group is present in carboxylic acids? A -OH B -COOH C -CHO D -CO-
6 Bromine water test is used to detect: A Saturated hydrocarbons B Unsaturated hydrocarbons C Alcohols D Acids
7 Structural isomers have the same: A Structural formula B Chemical properties only C Molecular formula D Physical properties
8 Fatima is studying saturated hydrocarbons. She learns that alkanes are saturated hydrocarbons. What does saturated mean in this context? A Contains double bonds B Contains only single bonds between carbon atoms C Contains triple bonds D Contains rings
11 Bilal is studying the preparation of alkanes. He learns that alkanes can be prepared by the reduction of alkyl halides. Which reagent is commonly used for the reduction of alkyl halides to alkanes? A Zn/HCl B H2/Ni C KMnO4 D H2SO4
12 Ming is studying the cracking of larger hydrocarbons. He knows that cracking produces alkenes, which are more reactive than alkanes. What is the use of alkenes produced from cracking? A As fuels B As starting materials for polymers C As solvents D As cleaning agents
13 Chloe is learning about the dehydrogenation of alkenes. She knows that alkenes can be converted to alkanes by adding hydrogen. What is this reaction called? A Oxidation B Hydrogenation C Halogenation D Combustion
18 Laura is studying the classification of organic compounds. She learns that compounds can be classified as open chain or closed chain. Which of the following is an open chain compound? A Cyclohexane B Butane C Benzene D Cyclopropane
19 David is studying molecular formulas. He learns that a molecular formula shows the actual number of atoms of each element in a molecule. What is the molecular formula of ethane? A CH4 B C2H6 C C3H8 D C2H4
20 Yusuf is studying the halogenation of alkanes. He knows that fluorine reacts explosively with alkanes. Why is fluorine more reactive than chlorine in halogenation? A Because F-F bond is weaker than Cl-Cl bond B Because F-F bond is stronger than Cl-Cl bond C Because fluorine has higher electronegativity D Both A and C
21 Omar is learning about amines. He understands that amines are important in biology. Which amine is a component of amino acids? A Methylamine B Ethylamine C Aniline D All of the above
24 Ethan is learning about alkanes. He knows that alkanes are generally unreactive. What is the main use of alkanes? A As solvents B As fuels C As fertilizers D As preservatives
25 Tina is studying functional groups of alcohols. She learns that the hydroxyl group (-OH) is characteristic of alcohols. What is the name of the simplest alcohol? A Ethanol B Methanol C Propanol D Butanol
26 Ibrahim is learning about alkynes. He understands that alkynes contain triple bonds. Which of the following is an alkyne? A Ethene B Ethyne C Propane D Butene
27 The functional group –COOH is called: A Amino group B Hydroxyl group C Carboxyl group D Carbonyl group
30 Nora is studying the halogenation of alkanes. She knows that UV light is required for halogenation. What is the role of UV light in halogenation? A To provide energy to break the halogen-halogen bond B To increase the temperature C To act as a catalyst D To remove byproducts