Arrange the following historical events in the history of life in chronological order?
(A) Natural selection
(B) Self-replicating molecules
(C) Eukaryotic cell
(D) Prokaryotic cell
Choose the correct answer from the options given below:

Biolistics (gene gun) is suitable for:

Match List I with List II

LIST I	LIST II
A. Down's syndrome	I. 44+XXY
B. Thalassemia	II. Autosomal recessive trait
C. Klinefelter's syndrome	III. 44 + XO
D. Turner's Syndrome	IV. 45+XY/XX

Choose the correct answer from the options given below:

Resource partitioning among the species is the mechanism to avoid:

Darwin's finches and Australian marsupials are an example of:

Which of the following structures have 3n (triploid) number of chromosomes?

Generally, an angiosperm embryo sac at maturity is -

Let A = {1,2,3}.
The number of relations on A containing (1, 2) and (2, 3),
which is reflexive and transitive but not symmetric, is:

Predict which of the following mixtures will show a positive deviation from Raoult's Law ?

For the given five values 16, 25, 19, 34, 46, the three years moving averages are:

If \(a_{i j}=i+3 j\), then the matrix of order 2 with elements as \(a_{i j}\) is

The angle between the pair of straight lines given by \(\vec{r}=(3 \hat{i}+2 \hat{j}-4 \hat{k})+\lambda(\hat{i}+2 \hat{j}+2 \hat{k})\) and \(\vec{r}=5 \hat{i}-2 \hat{j}+\mu(3 \hat{i}+2 \hat{j}+6 \hat{k})\) is :

Read the passage carefully and answer the Questions
Aldehydes and ketones are important organic compounds prepared mainly by oxidation of alcohols. Primary alcohols give aldehyde and secondary alcohols yield ketones. Aldehydes can also be formed by partial reduction of acid chlorides, reduction of esters or by Gattermann-Koch reaction. Ketones are prepared by Friedel-Craft's acylation, hydration of alkyne and reaction of Grignard's reagent with nitriles. Chemically, aldehydes and ketones are reactive in nature due to the carbonyl group and undergo nucleophilic addition reactions. Aldehydes are more reactive than ketones and can be oxidized to carboxylic acids, while both can be reduced to alcohols or hydrocarbons and exhibit condensation reaction.
When two moles of benzaldehyde are heated with concentrated NaOH solution, the product/s obtained is/are: