Question
Which of the following is the laughing
gas?Solution
Nitrous oxide is used as a laughing gas. Nâ‚‚ O is the chemical formula of nitrous oxide. Nitrous oxide, commonly known as laughing gas is a chemical compound, an oxide of nitrogen with the formula N and O. At room temperature, it is a colorless NON INFLAMMABLE GAS, with a slight metallic scent and taste. At elevated temperatures, nitrous oxide is a powerful oxidizer similar to molecular oxygen. Hence, option A is correct.
Which option is incorrect?
From standard pack of 52 cards, 3 cards are drawn at random without replacement. The probability of drawing a king, a queen and a jack in order is
If A and B are mutually exclusive, the general addition rule is:
If the difference between the rank of the 4 observations are 2.5, 0.5, -1.5, -1.5, then Spearman's rank correlation coefficient equals to:
If Z follows standard normal distribution with mean 0 and variance 1, then Z2 follows:
At a round table, n persons are seated on n chairs. The probability that two friends from same college are sitting next to each other, is:
The 95% confidence interval of average age of accidents in any city during last year for a sample of size 100 with mean age 34.25 from population of st...
For the ANOVA which of the following options is INCORRECT.
1.      Null hypothesis H0 : μ1 = μ2 = ... = μn
2.      F ...
Relevant for Exams:
