41.

The main chemical constituent of clay is
A. silicon oxide B. aluminium borosilicate
C. zeolites D. aluminium silicate
Answer and Explanation
Answer:D
Explanation: No answer description available for this question.
42.

The mineral containing both magnesium and calcium is
A. magnesite B. calcite
C. carnallite D. dolomite
Answer and Explanation
Answer:D
Explanation: No answer description available for this question.
43.

The metal does not give H2 on treatment with dilute HCL is
A. Zn B. Fe
C. Ag D. Ca
Answer and Explanation
Answer:C
Explanation: No answer description available for this question.
44.

The most extensive, commercially useful source of thorium as monazite sand occurs in India at
A. Orissa coast B. Travancore coast
C. West Bengal coast D. Gujarat coast
Answer and Explanation
Answer:B
Explanation: No answer description available for this question.
45.

The main active constituent of tea and coffee is
A. nicotine B. chlorophyll
C. caffeine D. aspirin
Answer and Explanation
Answer:C
Explanation: No answer description available for this question.