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Correct option is B) be

Jesus took the blind man to a quiet place away from the crowd and gently touched his eyes, but he could only see few movements.

Correct option: A. Selecting wrong control points

Correct option: A. Raster

Seals were used to make a sealing, or positive imprint, like this modern resin one made from the original seal. Sealings were used in ancient times for trade. They would be made on ceramics or the clay tags used to seal the rope around bundles of goods.

correct option is (b) Bridge 

India's indigenous pigs generally give birth to 4 to 6 young ones at a time.

(a) Kothagudam

(d) Explosives factory

(a) The Geological Survey of India

(a) B < Be < C < 0 < N

The ionisation energy increases across a period as atomic size decrease 

Therefore, correct order is B < Be< C <O<N

ΔH_ionisation of CH₃COOH = |-57.3 - (-55.3)|

= 2 KJ/mol

(d) Ca < Mg < Be < Sr

The size of alkali metals increases down the group, and volume also shows an increase. Since volume is inversely proportional to the density, there is an increase in the volume, which is lesser than increasing mass in the case of Sr and Ba. So as moving down the group, density decreases first and then increases.

2.00

N₂ and O₂^2- are diamagnetic species

(c) Sodium arsenite

Sodium arsenite is a herbicide

(d) Endothermic, ΔS > 0

ΔS > 0 for micelle formation and the process is endothermic at low temperature.

(D) Sodium chlorate and sodium 

Both sodium chlorate and sodium arsenite behave as herbicide.rsinite.

(a) Sodium arsinite, Sodium chlorate

Sodium chlorate (NaCIO₃), sodium arsinite (Na₃ASO₃) are examples of herbicides.

Correct option is C) are 

Correct option is C) am / a 

(B) H-bonding interaction 

Correct option is C) is from 

correct option is d) Relief Group

Correct option is A) a 

Correct option is B) in / in 

(b) Distortion energy theory 

For ductile material MDET result is best.

correct option is c. Save energy

(d) No gyroscopic effect

If rotor rotating axis i.e. the axis of spin and rolling axis are parallel, then during rolling there will not be any precession i.e. the direction of spin will not be changing during rolling of ship.

Therefore angular velocity of precession

ω_p = 0

= C = I. ω.ω_p = 0

Therefore, ship will not experience any gyroscopic effect during rolling.

Correct option is (d) 14.5 kg

N = 500 rpm

ω = \(\cfrac{2\pi\times 500}{60}\) 

= 52.3598 rad/s

r = \(\cfrac{150}2\) mm

= 75 mm = 0.075 meter

m_reci = 21 kg 

m_rot = 15 kg 

b = 150 mm = 0.150 meter 

B = ?

Mass to be balanced = 2/3 Rotating+ Reciprocating

= \(\left({15+\cfrac23\times21}\right)\) 

= 15 + 14 = 29 kg

Total mass to be balanced 

m = 29 kg 

mrω² = B·b·ω² 

29 × 0.075 = B × 0.150

B = \(\cfrac{29\times0.075}{0.150}\) Kg

B = 14.5 kg

Correct option (D) Myelin sheath is discontinuous

Explanation:

Axon may or may not be covered by a fatty sheath called myelin sheath. This covering is missing at intervals. These gaps are known as Nodes of Ranvier.

a) 1. Primitive fossils have simple structure

2. Recently formed fossils have complex structure

3. Certain fossils are connecting links between different species.

b) 1. Organisms with complex structures are formed from those with simple structures.

2. Certain fossils indicate the evolution of one species from another species.

Do not agree

• The similarity in blood vessels, nerves, muscles and bones.
• Such anatomical resemblances indicate that they evolved from a common ancestor
• Differences in their external appearance are their adaptations to like in different habitats

Soil is a mixture of broken rocks and minerals, living organisms, and decaying organic matter called humus. Humus is dark, soft and rich in nutrients. Soil also includes air and water.

Soil is formed by the following actions: 

(a) Action of sun: The sun causes the heating of rocks during the day which causes them to expand. Then, these rocks cool down during night time leading to their contraction. Since, all parts of the rocks do not expand and contract at the same rate; it results in the formation of cracks on the rocks. Finally, these huge rocks break down into smaller pieces. 

(b) Action of wind: Strong winds and storms also erode the rocks. The strong wind carries small rock pieces and sand from one place to another like water. 

(c) Action of living organism: Roots of plants break down the rocks. Similarly, Lichens grow on the surface of rocks. These lichens release certain chemical that causes the rock surface to powder down to form a thin layer of soil. 

(d) Action of water: 

(i) Water gets into the cracks in the rocks, when this water freezes, it causes the cracks to widen. 

(ii) Flowing water wears away even hard rocks over long periods of time. Fast flowing water often carries big and small particles of rock downstream. These rocks rub against other rocks and the resultant abrasion causes the rocks to wear down into smaller and smaller particles, resulting in the formation of soil. 

The type of soil is decided by the average size of particles found in it and the quality of the soil is decided by the amount of humus and the microscopic organisms found in it. 

The nutrient content of a soil, the amount of humus present in it and the depth of the soil are some of the factors that decide which plants will thrive on that soil. The quality of the topsoil is an important factor that decides biodiversity in that area.

Correct option: a. Ardipithecus ramidus

b. There was no free oxygen in primitive earth, 

d. There was availability of energy in primitive earth.

(a) The air above land gets heated faster and being light, it starts rising up. As the air rises, a region of low pressure is created. As a result, the air from the surrounding areas and from the top of the water bodies rushes into this area. The movement of air from one region to another creates wind.

(b) Soil erosion can be prevented by avoiding over-grazing, by constructing proper drainage canals around the fields.

a. Orangutan, others are members of human evolution.

b. Monkey, others are members of Hominoidea.

c. Oxygen, others are gases present on primitive earth.

Water covers nearly 75% of the earth but most of the earth’s water is salty or permanently frozen. Ninety - seven percent of all the water on the earth is salt water which is not suitable for drinking. Only three percent of all the water is fresh water, and only one percent is available for drinking water. The other two percent is locked in ice caps and glaciers. Fresh water is found in ice, lakes, rivers, streams and underground. With all the people on Earth relying on such a small percentage of all the water on Earth, it only makes sense that we must preserve and conserve our water. Moreover, most of the sources of water supply are contaminated by industrial waste or sewage making it all the more necessary to conserve water.

Answer (A) Ape

(C) Chimpanzee

Biodiversity is on a dangerous decline due to the interference of human beings in nature and natural resources. By human interventions, climatic changes brought in as well as the extinction of many organisms.

a) Lamarck 

b) variations affect genetic constitution only transferred to next generation

Concepts of Darwin

a. Selection by nature leads to the diversity of species.

c. Those organisms that overcome the unfavourable situations will survive.

Concepts of Matthus

b. Rate of food production does not increase proportionately to the increase in population. d. Scarcity of food and starvation lead to struggle for existence.

a.

• Primitive fossils have simple structure.
• Recently formed fossils have complex structure.
• Certain fossils are connecting links between different species.

b.

• Organisms with complex structure are formed from those with simple structure.
• Certain fossils indicate the evolution of one species from another species.

A – (iii) 

B – (i) 

C – (iv) 

D – (ii)

Organs which are different in external structure and function, but similar in internal structure are called homologous organs. The comparative study of homologous organs reveals the possibility of a common ancestor to such animals.

Correct option: c. Panspermia

B – Comparative morphology 

D – Molecular biology

a. Molecular biology, Mutation, etc. 

b. Explanations from Neo Darwinism, Mutation, Crossing over.