BCECE B.Sc Nursing 2025 Question Paper(Available): Download Solution PDF With Answer Key

The pyrimidine bases present in DNA are:

• (1) Cytosine and Uracil
• (2) Cytosine and Thymine
• (3) Cytosine and Guanine
• (4) Cytosine and Adenine

Tomato is a natural source of which acid?

• (1) Acetic acid
• (2) Citric acid
• (3) Tartaric acid
• (4) Oxalic acid

Oxidation of toluene to benzaldehyde by the use of chromyl chloride is called

• (1) Wurtz reaction
• (2) Etard's reaction
• (3) Fittig reaction
• (4) Rosenmund's reaction

Angular shape of ozone molecule consists of

• (1) 1 sigma and 2 pi-bonds
• (2) 2 sigma and 2 pi-bonds
• (3) 1 sigma and 1 pi-bond
• (4) 2 sigma and 1 pi-bond

The number of atoms in 0.1 mole of a triatomic gas will be (NA = \( 6.02 \times 10^{23} \)):

• (1) \( 1.800 \times 10^{22} \)
• (2) \( 6.026 \times 10^{22} \)
• (3) \( 1.806 \times 10^{23} \)
• (4) \( 3.600 \times 10^{23} \)

Which of the following compounds contains the -COOH (carboxylic) group?

• (1) Aspirin
• (2) Ethanol
• (3) Acetone
• (4) Formaldehyde

What is Insulin chemically?

• (1) Carbohydrate
• (2) Lipid
• (3) Protein
• (4) Vitamin

The half-life of a first-order reaction is 1386 seconds. What is the specific rate constant of this reaction?

• (1) \(0.5 \times 10^{-3} \, s^{-1}\)
• (2) \(5.0 \times 10^{-3} \, s^{-1}\)
• (3) \(0.5 \times 10^{-2} \, s^{-1}\)
• (4) \(5.0 \times 10^{-2} \, s^{-1}\)

Blood clotting is caused by which vitamin?

• (1) Vitamin A
• (2) Vitamin C
• (3) Vitamin K
• (4) Vitamin D

What is the outer electronic configuration of Gd (Gadolinium, atomic number 64)?

• (1) [Xe] \( 4f^7 \, 5d^1 \, 6s^2 \)
• (2) [Xe] \( 4f^8 \, 6s^2 \)
• (3) [Xe] \( 4f^6 \, 5d^2 \, 6s^2 \)
• (4) [Xe] \( 4f^7 \, 5d^0 \, 6s^2 \)

In electrolysis of dilute H\(_2\)SO\(_4\), what is liberated at anode?

• (1) H\(_2\)
• (2) SO\(_4^{2-}\)
• (3) SO\(_2\)
• (4) O\(_2\)

Red lead is:

• (1) PbO
• (2) PbO\(_2\)
• (3) Pb\(_3\)O\(_4\)
• (4) Pb\(_2\)O\(_4\)

Which one of these is the most acidic oxide?

• (1) MnO (Manganese (II) oxide)
• (2) Mn\textsubscript{2}O\textsubscript{3} (Manganese (III) oxide)
• (3) Mn\textsubscript{2}O\textsubscript{7} (Manganese (VII) oxide)
• (4) MnO\textsubscript{2} (Manganese (IV) oxide)

Which of these amino acids contains an indole group?

• (1) Alanine
• (2) Tryptophan
• (3) Glycine
• (4) Proline

Which of the following functional groups is NOT present in Aspartame?

• (1) Ester
• (2) Amide
• (3) Carboxylic acid
• (4) Aldehyde

Which of these sulfides is not black?

• (1) CuS
• (2) PbS
• (3) Ag\(_2\)S
• (4) CdS

What will be the products on heating Barium Nitrate Ba(NO\(_3\))\(_2\)?

• (1) BaO, NO\(_2\), O\(_2\)
• (2) Ba, NO\(_2\), O\(_2\)
• (3) Ba(NO\(_2\))\(_2\), O\(_2\)
• (4) BaO, N\(_2\)O

How many moles of O\textsubscript{2} will be formed from the decomposition of Pb(NO\textsubscript{3})\textsubscript{2}?

• (1) 1 mole
• (2) 2 moles
• (3) 0.5 mole
• (4) 4 moles

Cl\textsubscript{2}O\textsubscript{7} is the anhydride of which acid?

• (1) Hypochlorous acid (HClO)
• (2) Chlorous acid (HClO\textsubscript{2})
• (3) Chloric acid (HClO\textsubscript{3})
• (4) Perchloric acid (HClO\textsubscript{4})

In which compound does Mn (Manganese) have its highest oxidation state?

• (1) MnO\(_2\)
• (2) MnO\(_4\)
• (3) KMnO\(_4\)
• (4) Mn\(_2\)O\(_3\)

The formula of sodium nitroprusside is:

• (1) Na\textsubscript{4}[Fe(CN)\textsubscript{5}NOS]
• (2) Na\textsubscript{2}[Fe(CN)\textsubscript{5}NO]
• (3) NaFe[Fe(CN)\textsubscript{6}]
• (4) Na\textsubscript{2}[Fe(CN)\textsubscript{6}NO\textsubscript{2}]

What is the correct expression for the molar conductivity (\( \Lambda^\circ_m \)) of Al\(_2\)(SO\(_4\))\(_3\) at infinite dilution?

• (1) \( 2\lambda^\circ(Al^{3+}) + 3\lambda^\circ(SO_4^{2-}) \)
• (2) \( 3\lambda^\circ(Al^{3+}) + 2\lambda^\circ(SO_4^{2-}) \)
• (3) \( \lambda^\circ(Al^{3+}) + \lambda^\circ(SO_4^{2-}) \)
• (4) \( 6(\lambda^\circ(Al^{3+}) + \lambda^\circ(SO_4^{2-})) \)

Biuret test is not given by:

• (1) Carbohydrates
• (2) Polypeptides
• (3) Urea
• (4) Proteins

Paraffin wax is:

• (1) Ester
• (2) Acid
• (3) Monohydric alcohol
• (4) Cholesterol

Copper on reaction with moist air gives:

• (1) Copper carbonate
• (2) Copper oxide
• (3) Basic copper carbonate
• (4) Copper sulfate

In which of the following molecules/ions, are all the bonds not equal?

• (1) NF\(_3\)
• (2) NH\(_4^+\)
• (3) AgCl
• (4) CH\(_4\)

Which one is a Lewis acid?

• (1) CH\(_4\)
• (2) B\(_2\)H\(_6\)
• (3) H\(_2\)O
• (4) NH\(_3\)

Anisole is -

• (1) Benzene sulfonic acid (Benzene sulphonic acid)
• (2) Methoxybenzene (Methoxybenzene)
• (3) Acetophenone (Acetophenone)
• (4) Benzyl alcohol (Benzyl alcohol)

This oxide is most basic. [Ti=22, V=23, Cr=24, Fe=26]

• (1) FeO
• (2) VO
• (3) CrO
• (4) TiO

Both CO\textsubscript{2} and H\textsubscript{2} gases are -

• (1) Soluble in water
• (2) Colourless
• (3) Acidic
• (4) Heavier than air

Saponification occurs with...

• (1) Ester
• (2) Alcohol
• (3) Carboxylic acid
• (4) Alkane

How many grams of \(H_2O\) will be produced from 10g of \(H_2\) in an excess of oxygen?

• (1) 90 g
• (2) 10 g
• (3) 80 g
• (4) 100 g

What is deposited on the walls after whitewashing?

• (1) CaCO\(_3\) (Calcium carbonate)
• (2) Ca(OH)\(_2\) (Calcium hydroxide)
• (3) CaO (Calcium oxide)
• (4) CaSO\(_4\) (Calcium sulphate)

The main constituents of stainless steel are:

• (1) Iron, chromium, nickel and carbon
• (2) Iron, carbon, chromium and tungsten
• (3) Iron, nickel, carbon and vanadium
• (4) Iron, nickel, carbon and tungsten

Which of the following is fully fluorinated polymer?

• (1) Teflon
• (2) Neoprene
• (3) Thiokol
• (4) PVC

What will be formed from the reaction: NaOH + Zn \(\rightarrow\) ?

• (1) Sodium Zincate and Hydrogen gas
• (2) Zinc Oxide and Sodium
• (3) Sodium Hydride and Zinc
• (4) No reaction will occur

Which process causes the oil to lose its taste?

• (1) Hydrogenation
• (2) Oxidation
• (3) Reduction
• (4) Saponification

What is the color of the flame produced when Magnesium (Mg) is burned in air?

• (1) Yellow
• (2) Red
• (3) Green
• (4) Dazzling white

Which of the following oxides will be the most basic: Ti (22), V (23), Cr (24), Fe (26)?

• (1) Ti (Titanium)
• (2) V (Vanadium)
• (3) Cr (Chromium)
• (4) Fe (Iron)

Calculate the number of unpaired electrons in [Mn(H\textsubscript{2}O)\textsubscript{6}]\(^{2+}\), considering H\textsubscript{2O as a weak field ligand. (At. No of Mn = 25)

• (1) Two
• (2) Three
• (3) Four
• (4) Five

Which of the following is not a Bronsted acid?

• (1) CH\textsubscript{3}NH\textsubscript{3} (Methylammonium ion)
• (2) CH\textsubscript{3}COO\(^-\) (Acetate ion)
• (3) H\textsubscript{2}O (Water)
• (4) HSO\textsubscript{4} (Hydrogen sulfate ion)

What is the volume of solution needed to prepare a 3 Molarity (M) solution containing 80 g of NaOH?

• (1) 1.50 L / 1500 mL
• (2) 1.33 L / 1330 mL
• (3) 0.67 L / 667 mL
• (4) 0.50 L / 500 mL

What color does Silver Chloride (AgCl) turn upon exposure to sunlight?

• (1) Grey
• (2) White
• (3) Yellow
• (4) Brown

What is used for the Thermite Reaction?

• (1) \(Fe_2O_3 + Al\)
• (2) \(Fe_2O_3 + C\)
• (3) \(Al_2O_3 + Fe\)
• (4) \(CuO + C\)

What does sodium phthalate give on reaction with sodalime?

• (1) Benzene
• (2) Toluene
• (3) Phthalic acid
• (4) Phenol

What is the enthalpy of neutralization for \(CH_3COOH + NaOH\)?

• (1) Less than 57.1 kJ/mol
• (2) 57.1 kJ/mol
• (3) More than 57.1 kJ/mol
• (4) Zero

Benzene on ozonolysis followed by reaction with Zn + \(H_2O\) gives:

• (1) 3 moles of glycerol
• (2) 3 moles of glyoxal
• (3) 3 moles of glyoxalic acid
• (4) 3 moles of acetylene

The best indicator for titrating 0.1 N \(Na_2CO_3\) against 0.1 N HCl is:

• (1) Methyl orange
• (2) Litmus
• (3) Phenolphthalein
• (4) Potassium ferricyanide

The bond dissociation energies of gaseous \(H_2\), \(Cl_2\) and HCl are 104, 58 and 103 kcal, respectively. The enthalpy of formation of HCl gas would be:)

• (1) -44 kcal
• (2) -88 kcal
• (3) -22 kcal
• (4) -11 kcal

In a Bowler's solution containing the same concentrations of \(B^-\) and HB, the ratio of \(K_{B}\) to \(B^-\) is \(10^{-10}\). The pH of the Baker's solution will be -

• (1) 4
• (2) 6
• (3) 7
• (4) 10