Q.1:- Gas used for artificial ripening of fruits is ?
Q.2:- Vital force theory was put forward by ?
Q.3:- A fractionating column is used in ?
- Fractional Distillation
Q.4:- Which one among the following is used in making lead pencils ?
- Carbon Black
Q.5:- Sublimation is a process in which a solid ?
- Changes into another allotropic form
- Changes into liquid form
- Changes into vapour form
- None of the above
Q.6:- Which of the following is formed by strong heating of potassium permanganate ?
- None of these
Q.7:- The conversion of atmospheric Nitrogen into compounds is called ?
- Nitrogen conversion
- Nitrogen absorption
- Nitrogen fixation
Q.8:- Which is the catalyst used in manufacture of Sulphuric Acid by lead chamber process ?
- Oxides of Nitrogen
Q.9:- Photoconductors of Xerox machine ?
- Black Phosphorous
Q.10:- Which of the following is metallic in nature ?
Q.11:- The structure of Ozone is ?
Q.12:- Which one is a good conductor of electricity ?
- Red phosphorous
- Black phosphorous
- Violet phosphorous
- Scarlet phosphorous
Q.13:- Nitrogen combines with metal to form ?
- Nitrosyl Chloride
Q.14:- Which of the following oxides is amphoteric in nature ?
Q.15:- The variety of Coal having the highest carbon content is ?
Q.16:- Which one of the following forms of carbon is used in sugar industry ?
- Lamp Black
- Wood Charcoal
- Animal Charcoal
Q.17:- Sapphire is a mineral of ?
Q.18:- The name is Lavoisier is associated with the gas ?
- Carbon Monoxide
- Carbon Dioxide
Q.19:- Hydrogen peroxide decomposes to give ?
- H2 and O2
- H2 and H2O
- O2 and H2O
- H2, O2 and H2O
Q.20:- Temporary harness of water is due to the presence of ?
- Magnesium Bicarbonate
- Calcium Carbonate
- Calcium Chloride
- Magnesium Sulphate
Q.21:- The Iron obtained from blast furnace is ?
- Soft Iron
- Pig Iron
- Wrought Iron
Q.22:- Which of the following halogens has the greatest electron affinity ?
Q.23:- Which of the following is not a source of Sulphur ?
Q.24:- Oxygen molecule shows ?
Q.25:- Which of the following is responsible for blue baby syndrome ?