II-Chemistry Quiz-2 for all competitive exams SSC NEET JEE JAM SAT GATE CSIR NET TNPSC UPSC TRB etc
II-Chemistry Quiz-2 useful for all competitive exams NEET JEE JAM SAT GATE CSIR NET TNPSC UPSC TRB etc Group 1 Group 2
An acid without carboxylic acid group is
2,4,6-Trinitrophenol
Name the chemical in soap
Sodium/Potassium salt of Fatty acids
What is the most abundant carbohydrate in milk?
Lactose Disaccharide 1 molecule of Glucose + 1 molecule of Galactose
pH of the CH3COO- solution is
Basic pH more than 7
Van’t Hoff factor (i) value for 1M NaCl solution is
i = 2 NaCl - Na+ + Cl
) He2+ ions are called alpha particles
Why He filled balloons always fly up?
Helium is lighter or less denser than air (Nitrogen + oxygen)
Why CH3COO- is basic in solution?
CH3COO- + H2O = CH3COOH + OH- Hydrolysis
9) At equilibrium, delG = 0
10) Name the chemical in preserving biological specimen
Formalin – 40% Formaldehyde
Why CH3COO- is basic in solution?
CH3COO- + H2O = CH3COOH + OH- Hydrolysis
9) At equilibrium, delG = 0
10) Name the chemical in preserving biological specimen
Formalin – 40% Formaldehyde
11) For exergonic process, delG = -ive
12) pH equation of weak acid solution is
pH = -log10 [alpha C]
13) Abundant fatty acid in Butter is Butyric acid
14) Diamond is ____ crystal covalent
15) How many Bravais lattices are there? 14
16) Why N2 is less reactive than O2?
N2 Bond order 3 O=O bond order 2
So, more energy required to break into atoms
17) pH of 0.01 M NaOH pOH = -log [0.01] = 2 pH + pOH = 14 Therefore pH = 12 -2 = 10
18) How many milliequivalents are in 1g NaOH? 25
19) What is the monomer in cellulose & starch? Glucose
20) What is the gas mixed to detect leakage in Indane gas?
Ethyl mercaptan C2H5SH Sulphide
21) ___ acid can not stored in glass bottle. HF = Hydroflouric acid reacts with silicates
22) Name the acid present in Apple and lemon. Malic acid in Apple Citric acid in lemon
23) What is the unit of Kc for A = B + C ?
Mol/L Kc = [B][C]/[A] = (mol/L)2 / mol/L
24) Brick red colour is due to __ compound Fe2O3
25) What is the energy of nth Bohr orbit in eV? En =- RH (13.6) X z2/ n2 eV