List of top Questions asked in AP EAPCET

At 298 K, liquid A (solute) forms an ideal solution with liquid B (solvent). The following graph is obtained for this solution.

Identify the correct statements about this graph:
I) x-axis represents the mole fraction of A
II) Point Z represents the vapour pressure of pure solvent
III) x-axis represents the mole fraction of B

A bomb of mass 12 kg at rest explodes into two pieces of masses 4 kg and 8 kg. If the velocity of 8 kg mass is $ 6\,{ms}^{-1} $, then the kinetic energy of 4 kg mass is

A → P is a first order reaction. The reaction was started at 10.00 AM. At 10.10 AM, the concentration of A was x mol L^-1. At 10.20 AM, the concentration of A was y mol L^-1. The half life (in min) of the reaction is equal to:

A halide with formula C₆H₁₃Br gave two isomeric alkenes A and B on dehydrobromination. On ozonolysis of mixture of A and B the following compounds were obtained: CH₃COCH₃, CH₃CHO, CH₃CH₂CHO and (CH₃)₂CHCHO. The halide is:

Match the following

List - I (Transgenic Plant)		List - II (Resistance)
A.	Papaya	I.	Phytophthora
B.	Bt cotton	II.	Ring spot virus
C.	Tomato	III.	Insect
D.	Potato	IV.	Pseudomonas

Consider the following
Statement-I: Natural rubber becomes soft at low temperature and brittle at high temperature.
Statement-II: Natural rubber has weak van der Waals forces between its polymer chains.

Choose the correct statement among the following

The scientist(s) identified the ratio between adenine and thymine and that between guanine and cytosine are constant and equal

Plants following different pathways in response to the environmental or phases of life to form different kinds of structures.

Choose the correct statements among the following
I. Diplo haplontic life cycle can be seen in Bryophyte.
II. In Volvox, meiosis in zygote results in haploid spore.
III. Cycas has siphonogamous oogamy.
IV. Mycorrhizal association can be seen in Cycas roots.

Assertion (A): External fertilization occurs in Angiosperms.
Reason (R): In internal fertilization organisms, egg is formed inside female body.
Identify the correct option from the following

The ratio of the currents i$_1$, i$_2$ and i$_3$ in the circuit is:

Choose the correct statements among the following
I. Exine exhibits an array of patterns and designs.
II. Tapetum layers of microsporangium will be useful for the dehiscence.
III. The intine wall of pollengrains is made up cellulose and pectin.
IV. By wall formation, 8 celled embryo sac is developed.

When 3 amp current was passed through an aqueous solution of salt of a metal M (atomic weight 106.4 u) for 1 hour, 2.977 g of Mⁿ⁺ was deposited at cathode. The value of n is (1 F = 96500 C mol^-1)

Action of restriction enzyme leads to the formation of sticky ends in both vector DNA and Foreign DNA because of
I. Recognise palindromic nucleotide sequence.
II. Cut the strand of DNA a little away from the centre of palindrome site.
III. Help to form complementary cut counter parts.

The BOD value of clean water is X. The maximum concentration of cadmium recommended in drinking water is Y. X and Y respectively are

Match the following

List - A		List - B
A.	Hydrolases	I.	Argino succinase
B.	Lyase	II.	Fructose 1,6 bisphosphatase
C.	Ligase	III.	Hexokinase
D.	Transferase	IV.	Ribose-5-phosphoisomerase
		V.	Glutamine synthetase

The sum of number of antibonding electrons present in O$_2$, O$_2^+$, O$_2^-$ is:

Observe the following molecules: ClF, SF$_4$, CH$_4$, NH$_3$, XeF$_4$, PCl$_5$. The number of molecules in which the central atom has expanded octet is:

A gaseous mixture at temperature T(K) consists of dihydrogen and dioxygen, with a total pressure of 2 2 bar. If the mixture is 33.33% dihydrogen and 66.67% dioxygen, what is the approximate partial pressure (in bar) of dihydrogen? (T(K), 2 bar total pressure)

One mole of an ideal gas is contained in a 1 L vessel at T(K) with a pressure of p atm. The vessel is split into two equal parts. What are the pressure and volume in each part?

Vessel (A) contains 1 mole each of H$_2$ and I$_2$, and vessel (B) contains 2 moles each of H$_2$ and I$_2$. Both vessels are at the same temperature and reach equilibrium for the reaction H$_2$(g) + I$_2$(g) $\rightleftharpoons$ 2HI(g). What is the ratio of the equilibrium constants $K_p$ for vessels A and B?

The conjugate acid and base of ammonia are X and Y, respectively. What are the shapes of X and Y?

Match the following

List - I		List - II
A.	cry II Ab	I.	Resistance to pest
B.	cry I Ab	II.	Control Bollworm
C.	RNAi	III.	Control corborer
D.	Bt cotton	IV.	Prevent nematode pathogen

For the reactions: NaBH$_4$ + I$_2$ $\rightarrow$ A + NaI + H$_2$, and A + LiH $\rightarrow$ B, what are A and B, respectively? (Reactions are not balanced)