Which of the following are isoelectronic species ?
A. H+ H H-
B. Li+ Na+ K+
C. C1- Br- I
D. F- Ne Na+
Molecular ions are formed by passing______________________?
A. High energy electron beam
B. ? – particle
D. All of the above
Which one is true about isotope ?
A. Same number of neutrons
B. Same mass number
C. Same physical properties
D. Same chemical properties
Which treatment is instituted in a cancerous patient:
A. Antibiotic therapy
C. Gene therapy
D. None of these
Which statement is incorrect for cloning?
A. The nucleus of a fertilized egg is replaced by the nucleus from the cell of a fully developed individual
B. Division of a single egg into one or more separate embryos.
C. The individual is the mirror image of the parent organism
D. It involves methods of sexual reproduction
Removal or degradation of environmental pollutants or toxic materials by living organisms is called
A. Integrated disease management
B. Hydroponic culture technique C. Pasteurization
When collision between the bodies in a system is inelastic in nature then for system ____________________?
A. momentum changes but K.E remain conserve
B. K.E changes but momentum remain conserve
C. both momentum and K.E changes
D. both momentum and K.E remain conserve
The acceleration in the rocket at any instant is proportional to the nth power of the velocity of the expelled gases. Where the value of n must be ?
Which of the following is not an example of projectile motion ?
A. a gas filled ballon
B. bullet fired from gun
C. a football kicked
D. a base ball shot