when school reform goes wrong

Production of aromatic hydrocarbons (arenes) like benzene, toluene and xylenes. Earlier the bulk of arenes were obtained from coal tar, but now they are derived from petroleum by the process of reforming. Increasing the octane number of straight-run gasoline by increasing the proport..

Jake wrote a test that had 30 questions. If 12 of the questions were marked wrong, find the number of questions that were marked right. => 18 or 42 or 28 or 22..

Serena wrote a test that had 35 questions. 14 out of these were marked wrong. How many questions were marked right? => 19 or 12 or 21 or 31..

Gary wrote a test that contained 66 questions, out of which 15 questions were marked wrong. How many questions were marked right? => 51 or 15 or 66 or 41..

Francis goes for a long drive twice a week. How many times would he go for a long drive in a month? => 10 or 12 or 8 or 6..

Danielle goes shopping every evening for 3 hours. How many hours does she shop in a week? => 21 hours or 14 hours or 28 hours or None of the above..

Alice goes to dance classes at the time shown on the clock. Find the time. => quarter to 4 or quarter past 4 or quarter to 3 or quarter past 3..

Select the wrong statement with respect to a kite. 1. Two pairs of adjacent sides are congruent 2. Diagonals are perpendicular to each other 3. Diagonal bisects both the vertex angles => 3 or 2 or 1 or None of the above..

A steamer travels the distance between the two ports in 9 hours, when it goes downstream. When it goes upstream, it covers the same distance, 396 km in 11 hours. Find the speed of the steamer and the current. Assume that both are constant. => 36, 44 or 40, 4 or 40, 80 or 36, 40 ..

Charles goes on trekking. He treks 6.7 ft per minute. How far does he trek in 40 min? => 258 ft or 278 ft or 269 ft or 268 ft..