Exam Instructions

• The test is 3 hours long and has 180 questions, each carrying 4 marks.
• A correct answer earns 4 marks, while an incorrect one deducts 1 mark.
• The maximum possible score is 720.
• Blue/black ball point pens are the only acceptable writing utensil on the answer sheet.
• Rough work is to be confined to the provided space in the test booklet.
• Candidates must hand over both the original and office copies of the answer sheet to the invigilator before leaving.
• Test booklets are permissible to take away.
• Answer Sheets should not be folded to prevent damage.
• The form number should only be written where specified on the answer sheet/test booklet.
• White fluid is not allowed for corrections.
• Candidates must present their Allen ID card upon request.
• Leaving the seat is prohibited without the invigilator's explicit permission.
• Answer sheets must be handed over to invigilators and the attendance sheet must be signed (with time) twice before leaving the examination hall.
• Failure to sign a second time results in the candidate being considered for unfair means.
• Electronic or manual calculators are forbidden.
• Candidates are bound by all examination rules and regulations.
• Detaching any part of the test booklet or answer sheet is not allowed.
• Candidates need to correctly write their test booklet code on the answer and attendance sheets.

Chemistry key points:

• In chromium, there are 4 electrons with n = 2 and l = 1.
• Among orbitals 3dxy, 2px, 3s and 2s, 3dxy has max nodal planes and 2s has max radial nodes.
• For multi-electron atoms, the 4f-orbital lies between the 6s and 5d orbitals in the energy level sequence.
• Aufbau principle corresponds to electronic configuration.
• De Broglie relates to λ = h / (mv).
• Hund's rule relates to Max. unpaired e-.
• Planck's law relates to λ = hc/ΔE.
• The e/m ratio is maximum for a singly ionized hydrogen atom (H+).
• The radius of the third orbit in Bohr's model is nine times the radius of the first orbit.
• The ratio of the radii of the first orbits of H, He+, and Li2+ is 1:2:3

Chemistry Questions:

• The maximum count of electrons in this period subshell for the 8th period is 50.
• Types of subshells in the 8th period is 5.
• [Rn]6d², 7s² corresponds to the element Thorium (Th), which is an f-block element.
• Zeff increase is limited across a transition series due to the shielding effect of d-orbitals.
• Elements and Atomic radii match as follows: O - 77, C - 68, B - 66, N -88.
• The correct order of ionic sizes is Gd > Eu > Yb > Lu.
• The process requiring maximum energy is M(g) → M2+(g).
• Where Y+ and X- have a configuration of 2s2 2p6, IP of X− > IP of Y+.
• Element outer shell configuration and I.E matches as: 3s1 - 22, 25, 36, 42, 250 etc.
• Ionization Energy and elements match as so- 3s1 - S, 3s2 - R, 3s23p1 - Q, 3s23p2 - P.
• The electron affinity orderCl > F > Br > I is incorrect.
• The given electronic radius order Mg+2 < K+ < S−2 < Se−2 is incorrect.
• The incorrect statement is, F has highest electron affinity.
• The incorrect statement is, the decreasing order of bond dissociation energy is Cl2 > F2 > Br2 > I2.
• The correct acidic nature order is N2O < N2O3 < N2O4 < N2O5.
• Incorrect statement is, assertion: at room temperature O2 and N₂ are stable molecule but S2 and P2 are less stable, with reason collateral overlapping is effective but 3pπ – 3pπ overlapping is weak, is incorrect.
• BF3 < NH3 < NF3 < H2O is generally correct for the dipole moment.
• The correct order for boiling point is CO2 < CS2 < CCl4 < H2O.
• Incorrect statement is magnitude of the H-bonding depends on the physical state of the compound.
• An incorrect orbital combination is s + py (where the x-axis is internuclear axis).

Biology key points:

• DNA is not found in ribosomes.
• Match Column-I with Column-II: Cristae - Infoldings in mitochondria, Thylakoids - Flattened membranous sacs in stroma of plastids, Centromere - Primary constriction in chromosome, Cisternae - Disc shaped sacs in Golgi apparatus.
• The outermost covering is the cell membrane in animals.
• Statement-I incorrect, Statement-II correct. Explanation: The centriole forms the axoneme of cilia and flagella but NOT spindle fibres.
• The incorrect statement is hydrolytic enzymes of lysosomes are optimally active at basic pH.
• A centriole consists of 9 evenly spaced peripheral triplet fibrils of tubulin.
• Incorrect statement is the material of the nucleus is stained by acidic dye.
• Algal cell walls are made of Cellulose, Galactans, Mannans & Minerals likes CaCO3.
• Middle lamella holds or glues the different neighbouring plant cells together.
• Amyloplast are the type of plastid is involved in storage of starch.
• Ribosomes are found only in prokaryotes .
• synaptonemal complex formation occurs in prophase I.
• Incorrect statement is Each chromosome has one chromatid in telophase-I.
• The correct statements: Anaphase-II begins with the simultaneous splitting of the centromere and shortening of microtubules which are attached to kinetochore.
• A very significant contribution of mitosis is cell repair.
• Given a diploid cell contains 8 chromosomes, each daughter nuclei after meiosis-I will contain 4 chromosomes.
• Correct Statements: Quiescent stage (G0) of the cell cycle is called inactive stage cells in Go metabolic active.
• Mitosis involves division of cells that results in identical daughter cells.
• Wrong statement: Chromosomal material start to condense
• Complete disintegration of the nuclear membrane marks the start of Prophase in mitosis.
• Prophase of mitosis follows the S and G2 phases of interphase.
• Incorrect: In diakinesis, dissolution of synaptonemal complex occurs.
• During the S phase of the cell cycle, synthesis of histone protein takes place.
• Key points for remaining Biology questions are listed below:
  • enzyme involved of crossing over is recombinase.
  • Yeast can progress through the cell cycle in only about 90 mins.
  • The above diagram of (A) and (B) shows Guanine and Uracil which in DNA is Cytosine.
  • A protein is measured from the left end representing the first amino acid (N-terminal) and right end the last (C-terminal).
  • The odd one out from homopolymers is Protein.
  • The simplest amino acid is Glycine.
  • Inulin is NOT a protein.
  • Curcumin is not a toxin.
  • Arachidonic acid and palmitic acids have 20/16 carbon atoms in their structure.
  • Aldehyde functional group is within glucose.
  • Inulin is a linear polymer of fructose.
  • Codeine is a medically prescribed drug.
  • The substrate enzyme bines to its active site
  • Isomerases catalyses optical, geometric or positional isomers.
  • Statement a and d is correct. some nucleic acid that behave like enzyme are called ribozyme and catalytic activity of an enzyme is lost when co-factor is removed.
• Zinc is a metal cofactors carboxypeptidase.
• Co-factor that is a prosthetic group is Haem.
• NAD and NADP is Niacin.
• Given velocity Vmax of reaction - Km measures catalyst activity.

Anatomy and Physiology questions:

Key point of several human and biological questions:

• Conversion of inactive fibrinogens to fibrin in the plasma is performed by Thrombin. Both statements are correct with Statement B, the first heart sound is incorrect since semi-lunar don't close until the second heart sound. _ both sympathetic nerve and hormone effect can increase the heart rate. Both statements are correct concerning the coloured liquid and carriers.

• The correct types of white blood cells A= neutrophils, B=lymphocytes, C=basophil, D=Monocytes.

• The nature of natures is phagocytic by both (2) & (3: neutrophils and monocytes.

• Statements: a reduction of thromobocytes incorrect and (1) a reduction of thromobocytes incorrect

• Antibodies stimulate production. A is negative where B is positive.

• The following is absent in lymph (1 large, (3) both.)

• Bicuspid of valves occurs atrial. (1) -assertion of is correct CO2 can have a negative charge

• Assertion

• assertion of is correct CO2 can have charge -Statements include function such as the following: Globulins for human transfer.

• Fall of activate. correct JG cells B Angiostenin incorrect vasodillator.

• The shown is an e-sign the cell Which match can.

• ( 1 .)-Eosin to relation. Bicupids can't . Assertion

• (Both CO2.

Physics:

• Topics and equations relating to forces and movement in physics.
• Center of mass and momentum of multiple system particles and other system with motion
• Collison and kinetic calculation, with circular momentum.
• Key Physics topics. (
• 7√2.

• Force: Force.
• In
• A , and A = -5i.