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Which of the following statements is incorrect regarding preparation of alcohols? give primary alcohol and secondary alcohol respectively b) Ketones on reaction with Grignard’s reagent gives tertiary alcohol c) Aldehydes on reaction with Grignard’s reagent gives primary or secondary alcohol d) Alkyl halides on reaction alcoholic potash gives alcohol
A bar tender replaces some quantity of alcohol having 40% concentration with water and thus the concentration of alcohol changes to 30%. If the alcohol which he replaced is mixed with another sample of 260 ml alcohol having 20% concentration, then a mixture having 27% concentration of alcohol is prepared. Find the initial quantity of alcohol having 40% concentration.
Raj preparing an alcohol solution that contains 20% alcohol. But after the preparation, he found that the alcohol content was only 18%. If the volume of the prepared solution was 100 Litres, how much more alcohol is needed to make it 20% solution?
A diluted alcohol contains 16L of alcohol and rest is water. A new mixture in which the concentration of alcohol is 30% is to be prepared by replacing diluted alcohol. How many litres of the mixture shall be replaced with pure alcohol if there was initially 64L of water in the mixture.
While preparing an alcohol-water solution with 30% alcohol, accidently, more alcohol was mixed, and a solution containing 40% alcohol was made. How much water should be added in 20 litres of the prepared solution to obtain the desired solution?
The question below consists of a set of labelled sentences. These sentences, when properly sequenced form a coherent paragraph. Select the most logical order of sentences from among the options. P: We may see alcohol and tobacco advertisements everywhere, on television, in newspaper, on street ads card etc. Q: But we know the truth is alcohol and cigarette are harmful for people’s health and sometimes it may bring bad effects to self-impression. R: Alcohol ads usually create several feints to tell people that alcohol is good for people and induce people to drink. S: On the other hand, the malign influence of advertisements shows smoking as something "cool".
The question below consists of a set of labelled sentences. These sentences, when properly sequenced form a coherent paragraph. Select the mostlogical order of sentences from among the options. P: We may see alcohol and tobacco advertisements everywhere, on television, in newspaper, on street ads card etc.
Q: But we know the truth is alcohol and cigarette are harmful for peoples health and sometimes it may bring bad effects to self-impression.
R: Alcohol ads usually create several feints to tell people that alcohol is good for people and induce people to drink.
S: On the other hand, the malign influence of advertisements shows smoking as something "cool".
In the question below are given three statements followed by three conclusions numbered I, II and III. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts. Statements: I. Some preparation are not good II. Only a few good are wise III. No wise is preparation Conclusions: I. Some good are not wise is a possibility II. No preparation is wise III. Some preparation are good is a possibility
The following questions have three statements. Study the question and the statements and decide which of the statement(s) is/are necessary to answer the question. A diluted alcohol solution has 8 litres of alcohol and the rest is water. Find the amount of this solution which should be replaced with pure alcohol. Statement I: A new solution which has 30% alcohol concentration is to be formed. Statement II: The amount of final mixture is 40 litres. Statement III: The amount of water in the initial mixture was 32 litres.
Many poor families suffer due to the male members of family being addicted to alcohol. This not only burdens them with the unemployment of addicted members but also with bearing the expenses of buying alcohol. In most cases, it also leads to domestic violence on women. Experts state that banning alcohol would not reduce the consumption of alcohol but would cause further financial burden on these poor families. The statements above, if true, best support which of the following assertions?