As per the given information:
The male person in the photograph is the son of the only son of the lady's grand-father, which implies that the lady and the male person in the photograph are siblings so, the man is the brother of that lady.

Chemical synapses are biological junctions through which neurons' signals can be exchanged to each other and to non-neuronal cells such as those in muscles or glands.

A.T.Q.
the ratio of efficiency of A and B =2:1
Total work=(sum of efficiency of A and B) × Number of days 
Then total work =(2+1)14=42
Then B will do the work  = 42/1 = 42 days

Dibrugarh - Kanyakumari Vivek Express is a weekly train, numbered 15905/15906 and currently the longest train route in the Indian Subcontinent. It joins Dibrugarh in Assam, North-East India to Kanyakumari, Tamil Nadu which is the southernmost tip of Mainland India.

The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber. The cornea, with the anterior chamber and lens, refracts light. The cornea accounts for approximately two-thirds of the eye's total optical power.

In heavy water, each hydrogen atom is indeed heavier, with a neutron as well as a proton in its nucleus. This isotope of hydrogen is called deuterium, and heavy water's more scientific name is deuterium oxide, abbreviated as D_2O.

● Bases are ionic compounds that produce negative hydroxide ions ( OH⁻ ) when dissolved in water.
● Bases change the colour of litmus from red to blue.
● They are bitter in taste.

leaching is the loss of mineral and organic solutes due to very heavy rainfall, high temperature and percolation. Laterite soil is formed by excess leaching of parental sedimentary rock.

All are  baked except chocolate

The Sardar Sarovar Dam is a gravity dam on the Narmada river near Navagam, Gujarat in India. Four Indian states, Gujarat, Madhya Pradesh, Maharastra and Rajasthan, receive water and electricity supplied from the dam. The foundation stone of the project was laid out by Prime Minister Jawaharlal Nehru on 5 April 1961. The dam was inaugurated by Prime Minister Narendra Modi on 17 September 2017.