Options:
- A. 0.2m
- B. 0.2mm
- C. 0.2nm
- D. 0.2pm
View Answer
C. 0.2nm
Chemistry
Which of the following is not a macromolecule ?
Options:
- A. sand
- B. haemoglobin
- C. diamond
- D. maltose
View Answer
D. maltose
Which of the following statements is wrong about isotopes ?
Options:
- A. they possess different mass number
- B. they possess different physical properties
- C. they possess same chemical properties
- D. they possess different position in the periodic table
View Answer
D. they possess different position in the periodic table
Paramagnetic behaviour of substance is measured by a balance called___________________?
Options:
- A. Analytical balance
- B. Guoys balance
- C. Electrical balance
- D. Single beam balance
View Answer
B. Guoys balance
Which of following metals can be displaced by all other metals from its solution ?
Options:
- A. Ag
- B. A
- C. Au
- D. Cu
View Answer
C. Au
What is maximum number of electrons in an orbital with m (magnetic quantum number) = 3 ?
Options:
- A. 6
- B. 4
- C. 3
- D. 2
View Answer
D. 2
Which of the following set has all species isoelectronic__________________?
Options:
- A. F
- B. Li+1
- C. F
- D. H+
View Answer
C. F
Mass spectrometer is used to determine Mass number of isotopes and___________________?
Options:
- A. Atomic number
- B. Relative abundance
- C. Electronic configuration
- D. All of the above
View Answer
B. Relative abundance
Isotopes of the same elements has__________________?
Options:
- A. different number of protons
- B. same number of neutrons
- C. different number of neutrons
- D. same mass number (nucleon number)
View Answer
C. different number of neutrons
Qualitative analysis is carried out for _________________?
Options:
- A. identification of elements
- B. estimation of amounts of elements
- C. molar ration of elements
- D. molar volume of elements
View Answer
A. identification of elements