Questions

Sound waves cannot be transmitted through vacuum. 

In the above options, sperms are the haploid cells. In humans, haploid cells are those have only half the number of usual number of chromosomes. Sperm, gamates and egg cells are the haploid cells examples.

DNA is not a single stranded and does not have amino acids. Hence options, b & C are eiminated. Dna is a double helix structure containing nucleobase—either cytosine (C), guanine (G), adenine (A), or thymine (T)—as well as a monosaccharide sugar called deoxyribose and a phosphate group. 

Horography is an art of constructing watches or dials for measurement of time.

The rate of change of velocity is called as Acceleration.

Uranus is 2,870 million kilometers away from the sun and the time taken to complete one round at a speed of 6.8 km/sec is as  long as 84 years on earth

It is when themes of keywords are matched by AdWords to relevant content on various websites that run Google ads.

Language of ads is determined by the language setting of the Google interface the client is using.