MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 200950 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 3851. |
When is this statement true? The opposite of a number is less than the original number. |
| A. | This statement is true for positive numbers. |
| B. | This statement is true for negative numbers. |
| C. | This statement is always true. |
| D. | This statement is true for positive numbers. |
| Answer» E. | |
| 3852. |
Hydrolysis of a primary haloalkane followed by partial oxidation of the product produces___. |
| A. | an alcohol |
| B. | an aldehyde |
| C. | a carboxylic acid |
| D. | a ketone |
| Answer» C. a carboxylic acid | |
| 3853. |
Which one of the following reactions does not produce a mixture of structural isomers? |
| A. | the reaction of but-1-ene with HBr |
| B. | the reaction of but-2-ene with HBr |
| C. | the dehydration of butan-2-ol |
| D. | the reaction of 2-bromobutane with alcoholic NaOH |
| Answer» C. the dehydration of butan-2-ol | |
| 3854. |
If ethyl ethanoate undergoes hydrolysis and one of the products undergoes dehydration you will make___. |
| A. | ethane |
| B. | ethanal |
| C. | ethanol |
| D. | ethene |
| Answer» E. | |
| 3855. |
In which one of the following transformations does the product contain fewer atoms than the reactant? |
| A. | bromoethane to ethylamine |
| B. | ethene to bromoethane |
| C. | ethanol to ethanal |
| D. | ethanal to ethanoic acid |
| Answer» D. ethanal to ethanoic acid | |
| 3856. |
Which of the following transformations does not involve addition? |
| A. | EEhene to bromoethane |
| B. | Ethene to poly(ethene) |
| C. | Ethene to ethanol |
| D. | Ethanol and ethanoic acid to ethyl ethanoate |
| Answer» E. | |
| 3857. |
The best way of obtaining a high yield of 2-bromopropane is____. |
| A. | treating propane with bromine in the presence of UV light |
| B. | treating propane with hydrogen bromide |
| C. | treating propene with hydrogen bromide |
| D. | treating propene with bromine |
| Answer» D. treating propene with bromine | |
| 3858. |
The reaction between an alcohol and a carboxylic acid is an example of____. |
| A. | addition |
| B. | elimination |
| C. | esterification |
| D. | substitution |
| Answer» D. substitution | |
| 3859. |
2-bromopropane can be converted into propanone by___. |
| A. | substitution using aqueous NaOH |
| B. | substitution followed by dehydration then oxidation |
| C. | treatment with alcoholic OH- followed by oxidation of the organic product |
| D. | substitution using aqueous NaOH, followed by oxidation of the product |
| Answer» E. | |
| 3860. |
In order to synthesise butyl propanoate you would use______. |
| A. | C3H7OH and CH3COOH |
| B. | C4H9OH and CH3COOH |
| C. | C3H7OH and C3H7COOH |
| D. | C4H9OH and C2H5COOH |
| Answer» E. | |
| 3861. |
In order to synthesise butanal from 1-bromobutane you can___. |
| A. | reflux butanal with aqueous KOH then oxidise the organic product, distilling off the butanal |
| B. | reflux butanal with aqueous KOH then oxidise the organic product by refluxing with acidified dichromate |
| C. | reflux butanal with alcoholic KOH then oxidise the organic product by refluxing with acidified dichromate |
| D. | reflux butanal with alcoholic KOH then oxidise the organic product using distillation |
| Answer» B. reflux butanal with aqueous KOH then oxidise the organic product by refluxing with acidified dichromate | |
| 3862. |
Which of the following reactions of propan-1-ol involves elimination? |
| A. | propan-1-ol to propanal |
| B. | propan-1-ol to propanoic acid |
| C. | propan-1-ol to propene |
| D. | propan-1-ol to 1-bromopropane |
| Answer» D. propan-1-ol to 1-bromopropane | |
| 3863. |
If butan-1-ol is treated with concentrated phosphoric acid and the product is treated with HBr, you get___. |
| A. | but-1-ene |
| B. | 1-bromobutane only |
| C. | 2-bromobutane only |
| D. | a mixture of 1-bromobutane and 2-bromobutane |
| Answer» E. | |
| 3864. |
If ethanol is oxidised to a carboxylic acid and that acid is treated with ethanol, you would make__. |
| A. | CH3COOH |
| B. | CH3COOCH3 |
| C. | CH3COOC2H5 |
| D. | C2H5COOC2H5 |
| Answer» D. C2H5COOC2H5 | |
| 3865. |
The number of isomeric alkenes formed when butan-2-ol undergoes elimination is... |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 3866. |
Which one of the following is the major product when chloroethane reacts with excess ammonia? |
| A. | ethylamine |
| B. | diethylamine |
| C. | triethylamine |
| D. | tetraethylammonium chloride |
| Answer» B. diethylamine | |
| 3867. |
The conversion of ethane into ethylamine involves___. |
| A. | electrophilic substitution followed by nucleophilic substitution |
| B. | free radical substitution followed by nucleophilic substitution |
| C. | free radical substitution followed by elimination |
| D. | nucleophilic substitution followed by free radical substitution |
| Answer» C. free radical substitution followed by elimination | |
| 3868. |
Which of the following conversions does not involve oxidation? |
| A. | propan-1-ol to propanal |
| B. | propan-2-ol to propanone |
| C. | propanal to propanoic acid |
| D. | propene to propane |
| Answer» E. | |
| 3869. |
If the product of the reaction between C2H4 and HBr is treated with aqueous NaOH, you get____. |
| A. | CH3CHO |
| B. | C2H5OH |
| C. | C2H4 |
| D. | C2H4Br2 |
| Answer» C. C2H4 | |
| 3870. |
When propene reacts with hydrogen bromide, the product(s) of the reaction is/are____. |
| A. | 1-bromopropane only |
| B. | 2-bromopropane only |
| C. | a mixture of 1-bromopropane and 2-bromopropane |
| D. | 1,2-dibromopropane |
| Answer» D. 1,2-dibromopropane | |
| 3871. |
Which one of the following cannot be made from 1-bromopropane in a single reaction? |
| A. | propan-1-ol |
| B. | propane |
| C. | propene |
| D. | propylamine |
| Answer» C. propene | |
| 3872. |
John’s solution to an equation is shown below. Given: x2+5x+6=0Step 1: (x+2)(x+3)=0 Step 2: x+2=0 or x+3=0Step 3: x=-2 or x=-3 Which property of real numbers did John use ?for Step 2? |
| A. | commutative property of multiplication |
| B. | distributive property of multiplication overaddition |
| C. | multiplication property of equality |
| D. | zero product property of multiplication |
| Answer» E. | |
| 3873. |
Which of the following cannot be made from propan-2-ol in a single reaction? |
| A. | 2-bromopropane |
| B. | propanal |
| C. | propanone |
| D. | propene |
| Answer» C. propanone | |
| 3874. |
The conversion of 2-bromopropane into propan-2-ol is an example of__. |
| A. | electrophilic addition |
| B. | elimination |
| C. | free radical substitution |
| D. | nucleophilic substitution |
| Answer» E. | |
| 3875. |
The chart below shows an expression evaluated for four different values of x. x x2+x+5 1 7 2 11 6 47 7 61 Josiah concluded that for all positive values of x, x2+x+5 produces a prime number. Which value of x serves as a counter example to prove Josiah’s conclusion false? |
| A. | 16 |
| B. | 21 |
| C. | 5 |
| D. | 11 |
| Answer» D. 11 | |
| 3876. |
The conversion of 2-bromopropane into propene is an example of____. |
| A. | electrophilic addition |
| B. | elimination |
| C. | free radical substitution |
| D. | cleophilic substitution |
| Answer» C. free radical substitution | |
| 3877. |
The conversion of propene into 1,2-dibromopropane is an example of___. |
| A. | electrophilic addition |
| B. | elimination |
| C. | free radical substitution |
| D. | nucleophilic substitution |
| Answer» B. elimination | |
| 3878. |
The conversion of methane into chloromethane in the presence of UV light is an example of____. |
| A. | electrophilic addition |
| B. | elimination |
| C. | free radical substitution |
| D. | nucleophilic substitution |
| Answer» D. nucleophilic substitution | |
| 3879. |
Which of the following is a valid conclusion to the statement “If a student is a high school band member, then the student is a good musician”? |
| A. | All high school band members are goodmusicians |
| B. | All students are good musicians. |
| C. | A student is a high school band member. |
| D. | All good musicians are high school bandmembers. |
| Answer» B. All students are good musicians. | |
| 3880. |
What is the solution to the inequality x-5u003e14? |
| A. | xu003c9 |
| B. | xu003c19 |
| C. | xu003e19 |
| D. | xu003e9 |
| Answer» D. xu003e9 | |
| 3881. |
The lengths of the sides of a triangle are y, y 1, and 7 centimeters. If the perimeter is 56 centimeters, what is the value of y? |
| A. | 31 |
| B. | 24 |
| C. | 32 |
| D. | 25 |
| Answer» C. 32 | |
| 3882. |
Which number serves as a counterexample to the statement below? All positive integers are divisible by 2 or 3. |
| A. | 57 |
| B. | 25 |
| C. | 100 |
| D. | 30 |
| Answer» C. 100 | |
| 3883. |
What is the conclusion of the statement in the box below? If x2=4, then x=-2 or x=2. |
| A. | x=-2 |
| B. | x=2 |
| C. | x=-2 orx=2 |
| D. | x2 =4 |
| Answer» D. x2 =4 | |
| 3884. |
A 120-foot-long rope is cut into 3 pieces. The first piece of rope is twice as long as the second piece of rope. The third piece of rope is three times as long as the second piece of rope. What is the length of the longest piece of rope? |
| A. | 80 feet |
| B. | 20 feet |
| C. | 60 feet |
| D. | 40 feet |
| Answer» D. 40 feet | |
| 3885. |
The cost to rent a construction crane is (750 per day plus)250 per hour of use. What is the maximum number of hours the crane can be used each day if the rental cost is not to exceed $2500 per day? |
| A. | 13.0 |
| B. | 2.5 |
| C. | 3.7 |
| D. | 7.0 |
| Answer» E. | |
| 3886. |
The total cost (c) in dollars of renting a sailboat for n days is given by the equation c =120+60n. If the total cost was $360, for how many days was the sailboat rented? |
| A. | 4 |
| B. | 2 |
| C. | 8 |
| D. | 6 |
| Answer» B. 2 | |
| 3887. |
Solve: 3(x+5)=2x+35 Step 1: 3x+15 = 2x+35 Step 2: 5x+15 = 35 Step 3: 5x = 20 Step 4: x = 4 Which is the first incorrect step in the solutionshown above? |
| A. | Step 3 |
| B. | Step 2 |
| C. | Step 4 |
| D. | Step 1 |
| Answer» C. Step 4 | |
| 3888. |
Which equation is equivalent to 4(2-5x)=6 -3(1 -3x)? |
| A. | 8x=5 |
| B. | 29x=17 |
| C. | 8x=17 |
| D. | 29x=5 |
| Answer» E. | |
| 3889. |
The nucleus of an atom consists of? |
| A. | electrons and neutrons |
| B. | electrons and protons |
| C. | protons and neutrons |
| D. | All of the above |
| Answer» D. All of the above | |
| 3890. |
Henry VIII was:__________________ |
| A. | gullible |
| B. | stupid |
| C. | clever/intelligent |
| D. | none |
| Answer» D. none | |
| 3891. |
Henry VIII is the founder of:_____________ |
| A. | Buddhism |
| B. | Christianity |
| C. | Anglicanism |
| D. | none |
| Answer» D. none | |
| 3892. |
He killed one of his wives because he:_____________ |
| A. | was sad |
| B. | didn't like her |
| C. | only had daughters |
| D. | none |
| Answer» D. none | |
| 3893. |
Which equation is equivalent to 5x-2(7x+1)=14x? |
| A. | -9x+2=14x |
| B. | -9x-2=14x |
| C. | 12x-1=14x |
| D. | -9x+1=14x |
| Answer» C. 12x-1=14x | |
| 3894. |
Experts… __________________ ...that he could be Henry VIII: |
| A. | laugh |
| B. | believe |
| C. | don't believe |
| D. | none |
| Answer» C. don't believe | |
| 3895. |
What is the solution set of the inequality 5 -|x+4|u003c=-3? |
| A. | -12=u003c x =u003c4 |
| B. | -2=u003c x =u003c6 |
| C. | x=u003c-2 or xu003e=6 |
| D. | x=-12 or x=4 |
| Answer» E. | |
| 3896. |
Edward's mother was:__________ |
| A. | Charles Quint's aunt |
| B. | Anne Boleyn |
| C. | Jane Seymour |
| D. | none |
| Answer» D. none | |
| 3897. |
Which number does not have a reciprocal? |
| A. | 0 |
| B. | –1 |
| C. | 3 |
| D. | 1/1000 |
| Answer» B. –1 | |
| 3898. |
What is the solution for this equation? |2x -3| =5 |
| A. | x=-1 or x=3 |
| B. | x=-1 or x=4 |
| C. | x=-4 or x=4 |
| D. | x=-4 or x=3 |
| Answer» C. x=-4 or x=4 | |
| 3899. |
Supervisors heard:_______ |
| A. | a voice |
| B. | alarms |
| C. | a saw |
| D. | none |
| Answer» C. a saw | |
| 3900. |
What is the multiplicative inverse of 1/2 ? |
| A. | -1/2 |
| B. | -2 |
| C. | 2 |
| D. | 1/2 |
| Answer» D. 1/2 | |