MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 64577 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 1951. |
Repulsion in electron pairs occurs until the |
| A. | repulsive forces are minimized. |
| B. | repulsive forces are maximized |
| C. | None of Above |
| D. | the repulsive forces are completely diminished |
| Answer» B. repulsive forces are maximized | |
| 1952. |
The atomic number of Strontium (Sr) is |
| A. | 38 |
| B. | 12 |
| C. | 56 |
| D. | 20 |
| Answer» B. 12 | |
| 1953. |
Chlorine reacts with cold hydroxides ions in a disproportionation reaction, and results in |
| A. | killing the bacteria and germs in drinking water |
| B. | lowering the acidity of soil |
| C. | All of Above |
| D. | formation of commercial bleach |
| Answer» E. | |
| 1954. |
PLA is another polyester name for |
| A. | polyesters |
| B. | polyacid |
| C. | none |
| D. | polylactic acid |
| Answer» E. | |
| 1955. |
Suppose the air is stable and not moving, this would |
| A. | decrease the rate of evaporation |
| B. | increase the rate of evaporation |
| C. | disturb the rate of evaporation |
| D. | not affect the rate of evaporation |
| Answer» B. increase the rate of evaporation | |
| 1956. |
In electrolysis of silver nitrate solution, silver is deposited at |
| A. | cathode |
| B. | anode |
| C. | none |
| D. | both |
| Answer» B. anode | |
| 1957. |
Electromagnetic waves that include light belong to |
| A. | electronic spectrum |
| B. | light spectrum |
| C. | electromagnetic spectrum |
| D. | electromagnet group |
| Answer» D. electromagnet group | |
| 1958. |
Group II metals burn with characteristic colors because |
| A. | The metals are reduced when they react. |
| B. | these metals are highly colored |
| C. | None of Above |
| D. | the metals are oxidized when they react |
| Answer» E. | |
| 1959. |
An iron of 2000 W uses energy of 240000 J, the time taken by the iron in hours is |
| A. | 3 hours |
| B. | 1 hour |
| C. | 2 hour |
| D. | 1/2 hour |
| Answer» D. 1/2 hour | |
| 1960. |
The instrument used to measure temperature is termed as |
| A. | Thermometer |
| B. | Barometer |
| C. | Galvanometer |
| D. | Manometer |
| Answer» B. Barometer | |
| 1961. |
Electrical resistance of a piece of metal is a physical property of |
| A. | Thermocouple thermometer |
| B. | Mercury-in-glass thermometer |
| C. | Constant-volume gas thermometer |
| D. | Resistance thermometer |
| Answer» E. | |
| 1962. |
The electronegativity of Oxygen is |
| A. | 1.2 |
| B. | 2.5 |
| C. | 1.5 |
| D. | 3.5 |
| Answer» E. | |
| 1963. |
Consider the reaction: P(s) + O |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 3 |
| Answer» D. 3 | |
| 1964. |
Successive half-lives which decrease with the passage of time follow |
| A. | second order |
| B. | first order |
| C. | unit order |
| D. | zero order |
| Answer» E. | |
| 1965. |
Pressure due to a liquid column is equal to |
| A. | density of the liquid × height of column × gravitational field strength |
| B. | density of the liquid × height of column × base area × gravitational field strengt |
| C. | None of the above |
| D. | density of the liquid × base area × gravitational field strength |
| Answer» B. density of the liquid × height of column × base area × gravitational field strengt | |
| 1966. |
Mr is symbol given for |
| A. | relative formula mass |
| B. | relative molecular mass |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1967. |
When we decrease the wavelength the frequency |
| A. | decreases |
| B. | increases |
| C. | may increase or decrease |
| D. | remains same |
| Answer» C. may increase or decrease | |
| 1968. |
Introducing a halogen atom into an alkene can greatly reduce its |
| A. | volatility |
| B. | polarity |
| C. | reactivity |
| D. | flammability |
| Answer» E. | |
| 1969. |
Density is equal to |
| A. | m/a, where m is mass and a is area |
| B. | m/v, where m is mass and v is volume |
| C. | w/v, where w is weight and v is volume |
| D. | v/m, where v is volume and m is mass |
| Answer» C. w/v, where w is weight and v is volume | |
| 1970. |
The gas used now a days during operations to put patient to sleep is called |
| A. | halothane |
| B. | methane |
| C. | Halogenoalkanes |
| D. | halogenothane |
| Answer» B. methane | |
| 1971. |
Hydrogen has a number of isotopes |
| A. | 1 |
| B. | 2 |
| C. | 11 |
| D. | 3 |
| Answer» E. | |
| 1972. |
When speed of the object changes, the velocity |
| A. | also changes |
| B. | remains same |
| C. | increases |
| D. | decreases |
| Answer» B. remains same | |
| 1973. |
With sodium metal phenol reacts vigorously giving off |
| A. | sodium phenoxide |
| B. | hydrogen gas |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1974. |
Covalent bond is the sharing of |
| A. | electrons |
| B. | protons |
| C. | All of Above |
| D. | neutrons |
| Answer» B. protons | |
| 1975. |
The rate of evaporation is |
| A. | inversely proportional to the temperature of the liquid |
| B. | directly proportional to the temperature of the liquid |
| C. | directly proportional to the humidity of the surrounding air |
| D. | independent of the temperature of the liquid |
| Answer» C. directly proportional to the humidity of the surrounding air | |
| 1976. |
The single covalent bonds in carbon atoms is the |
| A. | pi bond |
| B. | sigma bond |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 1977. |
Reversible reactions are those which products react together to give original |
| A. | products |
| B. | reactants |
| C. | All of Above |
| D. | enzymes |
| Answer» C. All of Above | |
| 1978. |
The rate-determining step containing single specie (atom, ion or molecule) will make reaction |
| A. | unimolecular |
| B. | molecular |
| C. | multimolecular |
| D. | polymolecular |
| Answer» B. molecular | |
| 1979. |
Consider the reaction: Na(s) + H |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 3 |
| Answer» B. 1 | |
| 1980. |
An elevator motor is used to lift 1000 N load to a height of 0.25 km. If the total amount of energy input is 1MJ, which one of the following pairs of values of energy wasted and efficiency are correct? |
| A. | Energy wasted = 500 kJ, Efficiency = 75 % |
| B. | Energy wasted = 750 kJ, Efficiency = 75 % |
| C. | Energy wasted = 750 kJ, Efficiency = 25 % |
| D. | Energy wasted = 500 kJ, Efficiency = 25 % |
| Answer» D. Energy wasted = 500 kJ, Efficiency = 25 % | |
| 1981. |
Which of the following statements related to the waves is⁄are incorrect? |
| A. | All waves have the same speed i.e. equal to 3×10 |
| B. | m⁄s |
| C. | It provides a mechanism for transfer of energy from one point to another without the transfer of mat |
| D. | All of the above |
| E. | The source of any wave is vibration or oscillation |
| Answer» B. m⁄s | |
| 1982. |
Down the group, the boiling points of Halogens |
| A. | decrease |
| B. | increase |
| C. | None of Above |
| D. | remain steady |
| Answer» C. None of Above | |
| 1983. |
The symbol for distance is |
| A. | d |
| B. | s |
| C. | a |
| D. | dt |
| Answer» B. s | |
| 1984. |
In a giant metallic lattice, half the distance between nuclei is known as |
| A. | metallic radius |
| B. | atomic radius |
| C. | van der vaal's radius |
| D. | covalent radius |
| Answer» B. atomic radius | |
| 1985. |
The SI unit for power is |
| A. | Watts |
| B. | Joules |
| C. | Newton |
| D. | Ohms |
| Answer» B. Joules | |
| 1986. |
Caprolactum is made up of |
| A. | NH2 group |
| B. | 6-amino hexanedioic acid |
| C. | all of them |
| D. | COOH group |
| Answer» D. COOH group | |
| 1987. |
An object is lifted 5 m above the levelled ground, the mass of the object is 20 kg and the gravitational pull is 10 N kg |
| A. | 1000 J |
| B. | 40 J |
| C. | 0.4 J |
| D. | 2.5 J |
| Answer» B. 40 J | |
| 1988. |
If specific latent heat of fusion of ice is 340 kJ⁄kg, the heat required to melt the ice of 100 g would be |
| A. | 3400 J |
| B. | 34 J |
| C. | 34 MJ |
| D. | 34000 J |
| Answer» E. | |
| 1989. |
Velocity is a |
| A. | Vector quantity |
| B. | Scalar quantity |
| C. | Derived quantity |
| D. | Base quantity |
| Answer» B. Scalar quantity | |
| 1990. |
The coefficient of viscosity may be expressed in units of |
| A. | kg m s^-2 |
| B. | kg s m^-2 |
| C. | N m s^-2 |
| D. | N s m^-2 |
| Answer» E. | |
| 1991. |
The normal human body temperature is equal to 37 °C, which is equal to |
| A. | −236 K |
| B. | 310 K |
| C. | −310 K |
| D. | 236 K |
| Answer» C. −310 K | |
| 1992. |
The position of equilibrium explains the amounts of |
| A. | reactants |
| B. | products |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1993. |
The original name of Lord Kelvin was |
| A. | Thomson Kelvin |
| B. | William Kelvin |
| C. | none |
| D. | William Thomson |
| Answer» E. | |
| 1994. |
Consider the reaction: (NH |
| A. | helps to dissolve the residues away |
| B. | acts as a solvent |
| C. | All of Above |
| D. | acts with the urea only after urea is bound to enzyme surface |
| Answer» E. | |
| 1995. |
The color of the indicator is solely dependent upon concentration of |
| A. | OH- ion |
| B. | H+ ion |
| C. | none |
| D. | both a and b |
| Answer» C. none | |
| 1996. |
C6H12 is the formula of a |
| A. | sugar |
| B. | cyclohexane |
| C. | alkenes |
| D. | alkanes |
| Answer» C. alkenes | |
| 1997. |
Water reacts with Acyl chlorides in hydrolysis producing |
| A. | HCl |
| B. | carboxylic acids |
| C. | none |
| D. | both a and b |
| Answer» E. | |
| 1998. |
When the bond is broken homolytically the species produced are called |
| A. | free radicals |
| B. | free electrons |
| C. | free bond |
| D. | free atoms |
| Answer» B. free electrons | |
| 1999. |
In Halogens, greater opportunities for instantaneous dipoles arise due to |
| A. | low boiling point |
| B. | low atomic radii |
| C. | All of Above |
| D. | greater number of electrons |
| Answer» E. | |
| 2000. |
Sun is a good example of |
| A. | Non-luminous objects |
| B. | Luminous objects |
| C. | Opaque objects |
| D. | Transparent objects |
| Answer» C. Opaque objects | |