|Chemistry MCQs Quiz Test|
In Medical and Engineering tests Chemistry is the compulsory test. If you want to learn past papers MCQs then here is a list of objective type question answers.
Competitive Exams Preparations MCQs List
Q.1: The movement of gas molecules from a region of high pressure to vacuum is called ?
Q.2: Which one of the following elements is not present in all proteins ?
Q.3: The reaction of aldehydes which are (is) base catalysed addition ?
- Addition of hydrogen
- Addition of ammonia
Q.4: Acetic acid is manufactured by ?
Q.5: Acetic acid is ionizable ?
- Very strongly
- Not ionizable
Q.6: Charge to mass ratio (e/m) was determined by ?
- R.A Millikan
- J.J Thomson
- J. Perrin
- William Crooks
Q.7: Which of the following reactions occur at moderate rate ?
- Chemical weathering of stone work of buildings by acidic gases in atmosphere.
- Fermentation of sugars
- Hydrolysis of an ester
- Rusting of iron
Q.8: The process in which ionization of an electrolyte is suppressed by the addition of another strong electrolyte containing one same ion is called ?
- Common ion effect
Q.9: The substance that alters the rate of a chemical reaction but recovered unchanged at the end is called a ?
Q.10: The state of hybridization of carbon atom in methane is ?
Q.11: In primary alkyl halides, the halogen atom is attached to a carbon which is attached to how many carbon atoms ?
Q.12: The pH of 0.001M NaOH aqueous solution is ?
Q.13: A chemical reaction A →B is said to be in equilibrium when ?
- Complete conversion of A to B has taken place
- Conversion of A to B is 50% complete.
- 50% reactant has been changed to B.
- Rate of transformation of A to B is equal to B to A.
Q.14: Indus River originates from ---------- ?
Q.15: Stability of hydrides in a period from left to right ?
- Remains same
- May increases or decreases
Q.16: Which of the following acid can be used as a catalyst in Friedel Craft’s reactions ?
Q.17: The molecule has triple bond in it ?
- CO and CO₂
Q.18: The substance which is present in small quantity is called ?
- None of above
Q.19: In interstitial hydrides, the transition metals actually ?
- React with hydrogen
- React with atomic hydrogen
- Absorb hydrogen
- Adsorb hydrogen
Q.20: Formula of cryolite is ?
Q.21: Urea contains nitrogen ?
Q.22: Buffer capacity is maximum when both components have ?
- Low concentration
- Equal concentration
- High and equal concentration
- High concentration
Q.23: Baran River is flowing in the province of ?
Q.24: Reaction of CO₂ with Grignard’s reagent gives ?
- Ethanoic acid
Q.25: A white precipitate of silver chloride immediately formed on addition of ?
- Silver nitrate solution to potassium chloride solution.
- Silver chloride solution to sodium nitrate solution.
- Silver nitrate solution to sodium chloride solution.
- Silver nitrate solution to hydrogen chloride solution.
Q.26: In t-butyl alcohol , the tertiary carbon is bonded to ?
- Two hydrogen atoms
- Three hydrogen atoms
- One hydrogen atom
- No hydrogen atom
Q.27: 4-d series is in the period ?
Q.28: The basic distinction between solids, liquids and gases lies in difference between ?
- All of above
- Space which the molecules occupy
- Size of molecules
- Strength of bonds
Q.29: Which of he following is a noble gas ?
Q.30: Wrought iron is prepared from pig iron by the process ?
- Blast furnace
- Open heart process
- Bessemer’s atom
Q.31: What do you call the apparatus generally used for measuring heat changes ?
Q.32: Water contains oxygen about ?
Q.33: Oxygen is present in atmosphere about ?
- Not exactly so,
Q.34: According to Lewis concept ether behaves as ?
- Acid as well as a base
- None of them
Q.35: The fibre which is made from acrylonitrile as monomer ?
- Rayon fibre
- Polyester fibre
- Acrylic fibre
Q.36: Amyl butyrate has flavour of ?
Q.37: First atomic theory was put forward by an English school teacher ?
- John Dalton
Q.38: The mass of one mole of iodine ?
- 74 g
- 127 g
- 53 g
- 245 g
Q.39: Human blood has a pH of ?
Q.40: Maximum potential energy that can electron can have within the atom is ?
- Equal to zero
- Greater than zero
- Less than zero
Q.41: The covalent radius of Cl atom is ?
- 76 pm
- 176.7 pm
- 99.4 pm
- 38 pm
Q.42: Recified spirit contains alcohol about ?
Q.43: What is the value of internal of an element of 25°C at atmospheric pressure ?
- 273 cal/mole
- 0 cal/mole
- 50 cal/mole
- 10 cal/mole
Q.44: Vegetable oils are ?
- Unsaturated fatty acids
- Glycerides of unsaturated fatty acids
- None of these
- Essential oils obtained from plants
Q.45: The least sweet (sweetless) saccharide is ?
- All of these
Q.46: Which following derivative cannot be prepared directly from acetic acid ?
- Ethyl acetate
- Acetyl chloride
- Acetic anhidride
Q.47: Gaseous pressure is the force exerted by gas on unit ?
Q.48: When rate of reaction is restarted by adding a substance, it is said to be ?
- Positive catalyst
- Negative catalyst
- Auto catalyst
Q.49: Which compound does not show in isomerism ?
Q.50: When CO₂ is made to react with ethyl magnesium iodide, followed by hydrolysis, the product formed is ?
- Propanic acid