Genes are located on DNA present in the chromosome. Chromosomes are present in the nucleus of the cell.

Answer: B) Connecting to internet Explanation: A modem is nothing but short for Modulator and Demodulator. It is used mostly for connecting to the internet. A modem is a device or program that enables a computer to transmit data over, for example, telephone or cable lines. Computer information is stored digitally, whereas information transmitted over telephone lines is transmitted in the form of analog waves.

Answer: B) Koch Explanation:

The electron configuration for Cobalt at ground state would simply be Co: [Ar] 4s23d7. The s,p,d,f configuration for cobalt (Co) is 1s22s22p63s23p64s23d7 , determined by the position of the element on the periodic table. Cobalt is an inner transition metal which means the electron configuration will end in d block. Cobalt is in the 7th column of the d block and therefore has 7 d electrons d7.

Answer: D) Emit Explanation: Here the given words represent synonyms. Exhibit and Display are synonyms for each other. Similarly, Send and Emit are synonyms for each other.   Hence, Exhibit : display :: send : Emit.

Answer: A) Mesolithic Explanation:

Answer: B) rock color Explanation: Except Rock color, all other Graded bedding, Ripple marks and Mud cracks are sedimentary structures.

B2+ is a Paramagnetic.  The filled orbitals are σ(1s)22, σ∗(1s)22, σ(2s)22, σ∗(2s)22. The half-filled orbitals are π(2pxx) and π(2pyy). Since it posses 2 unpaired electrons, it is Paramagnetic in nature.