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9th Class Objective Type Chemistry MCQs Quiz Test
Q.1: If temperature of gallium arsenide is increased then its conductivity will———-?
- remains constant
- first decreases then increases
Q.2: Which of the following will decompose to produce litharge———?
- All of the above
Q.3: Which of the following is metasilicic acid ?
Q.4: Boron in soil has been considered micronutrient for———?
- Soil porocity
- Proper growth of plants
- Alkalinity of soil
- All Of Above
Q.5: Substance which is found in dried up lakes of Tibet and California is——–?
- Boric acid
- Calcium carbonate
Q.6: Which of the following does not give Borax bead test ?
Q.7: The metal which is used in thermite process because of its activity is———-?
Q.8: Ozonolysis of benzene produces———-?
- Vicinal diol
- Both B And C
Q.9: Boron is non-netal whereas A1 is metal. It is due to————?
- Small size
- High nuclear charge
- Both A and B
- No authorized justification yet
Q.10: One of the outstanding features of boron is its ability to form———?
- Molecular addition compounds
- Molecular crystals
- Ionic compounds