A. Cu
B. Cr
C. Ni
D. A1
Related Mcqs:
- Which one does not give borax bead test_________________?
A. Copper sulphate
B. Barium sulphate
C. Cobalt sulphate
D. Nickel sulphate - The coloured glassy mass in borax bead test is due to the formation of___________________?
A. metal borate
B. metal meta borate
C. metal boride
D. metal silicate - In borax bead test which compound is formed_________?
A. Ortho burate
B. Meta borate
C. Double oxide
D. Tetra borateSubmitted by: Muhammad Ali Kunbhar
- Borax is a white crystalline solid and it is_________________?
A. More soluble in cold water
B. More soluble in hot water
C. Insoluble in water
D. Soluble only in organic solvents - Aqueous solution of borax above 62°C gives crystals of________________?
A. Na2B4O7.4H2O
B. Na2B4O7.5H2O
C. Na2B4O7.2H2O
D. Na2B4O7.10H2O - Which of the following substances does not give iodoform test ?
A. acetaldehyde
B. ethyl alcohol
C. methyl alcohol
D. acetone - Which of the following substances does not give iodoform test ?
A. acetaldehyde
B. ethyl alcohol
C. methyl alcohol
D. acetone - Which of the following do not give aldol condensation reactions ?
A. formaldehyde
B. acetaldehyde
C. diemthyl ketone
D. propionaldehyde - Which one of the following methods will not give benzene ?
A. Heating sod. Salt of Benzoic acid with soda lime
B. Distilling phenol with Zn dust
C. Chlorobenzene with NaOH at 360°C & 150atm.
D. Hydrolysis of benzene sulphonic acid with super heated steam - Which of the following will give phosphoric acid one reaction with water_________________?
A. PCI5
B. P2O3
C. P2O5
D. All of the above
