Singh said there have been two "constant themes" of the BJP leadership -- one is corruption in UPA and the other is policy paralysis -- and both were "untrue".
"I want to assure you that we have been fighting corruption. We continue to fight corruption," he said.
Talking about farmers issue, Singh said there is acute distress in rural areas and if people there are "fed up" with the Modi government in one year, then things cannot be good.
On the economy, Singh said investments are not going up and exports are on the decline.
"look at what is happening to investment. Investment is not going up. look at what is happening to agricultural production. Agricultural production is declining. Our farmers are in distress. look at exports. Exports are declining.
"Throughout the country, there is an acute distress in rural areas. 65 per cent of our people live in rural areas. If they are dissatisfied, if they are fed up with this present regime in one year. Then, obviously things cannot be that good," he said.
The former PM said it was an obligation on the part of the Congress to give "correct" information to people about what was wrong with the BJP government and the "false talk" about the weaknesses of the UPA government.
"The Chief Economic Advisor of the Ministry of Finance and the RBI Governor are of the view that recovery is fragile and indeed if you look at the harsh reality you will find all is not well with the state of our economy under the BJP dispensation," he said.
The former Prime Minister also called the Make in India programme of Modi government a "carbon copy" of UPA's initiative.
"look at the issue of Make in India.... This is a carbon copy of a programme that our government had chalked out and the New Manufacturing Policy. We had pledged that we will raise the share of manufacturing in GDP," Singh said.
Singh said policies of the UPA government had led to a "profound" social transformation and "unprecedented economic growth" in the country. "Many of our programmes are now being repackaged and marketed as initiatives of the BJP government".
"It does not surprise us. It is a compliment if BJP takes up the constructive work done by UPA," Singh said adding, "We have nothing but to be proud of our achievements."
He said BJP government has to "manufacture" and "modify" some statistical data to show that the last one year has not been that bad for the economy.
"But their people are of the view that the recovery that they talk about in the last one year is very fragile recovery," he said.
listing initiatives of the UPA for the rural population, Singh said, "We have revitalised and strengthened educational facilities at all levels. launched rural health mission. launched Urban renewal mission.
"Congress party, Rahul Gandhi, Sonia Gandhi are committed to eradication of poverty and bringing in a new India free from fear of want and exploitation," Singh said.